diff --git a/scripts/bootstrap-common.sh b/scripts/bootstrap-common.sh
index 2406a21..ce1ded2 100755
--- a/scripts/bootstrap-common.sh
+++ b/scripts/bootstrap-common.sh
@@ -100,72 +100,52 @@ fund_liquidity_manager() {
     "$LIQUIDITY_MANAGER" --value 10ether >>"$LOG_FILE" 2>&1
 }
 
+grant_recenter_access() {
+  # FEE_DEST is a keccak-derived address with zero balance — fund it for gas
+  cast rpc --rpc-url "$ANVIL_RPC" anvil_setBalance "$FEE_DEST" "0xDE0B6B3A7640000" >>"$LOG_FILE" 2>&1 || true
+  bootstrap_log "Granting recenter access to deployer"
+  cast rpc --rpc-url "$ANVIL_RPC" anvil_impersonateAccount "$FEE_DEST" >>"$LOG_FILE" 2>&1
+  cast send --rpc-url "$ANVIL_RPC" --from "$FEE_DEST" --unlocked \
+    "$LIQUIDITY_MANAGER" "setRecenterAccess(address)" "$DEPLOYER_ADDR" >>"$LOG_FILE" 2>&1
+  cast rpc --rpc-url "$ANVIL_RPC" anvil_stopImpersonatingAccount "$FEE_DEST" >>"$LOG_FILE" 2>&1
 
-bootstrap_vwap() {
-  # Idempotency guard: if a previous run already bootstrapped VWAP, skip.
+  if [[ -n "${TXNBOT_ADDRESS:-}" ]]; then
+    bootstrap_log "Granting recenter access to txnBot ($TXNBOT_ADDRESS)"
+    cast rpc --rpc-url "$ANVIL_RPC" anvil_impersonateAccount "$FEE_DEST" >>"$LOG_FILE" 2>&1
+    cast send --rpc-url "$ANVIL_RPC" --from "$FEE_DEST" --unlocked \
+      "$LIQUIDITY_MANAGER" "setRecenterAccess(address)" "$TXNBOT_ADDRESS" >>"$LOG_FILE" 2>&1
+    cast rpc --rpc-url "$ANVIL_RPC" anvil_stopImpersonatingAccount "$FEE_DEST" >>"$LOG_FILE" 2>&1
+  fi
+}
+
+call_recenter() {
+  local recenter_pk="$DEPLOYER_PK"
+  local recenter_addr="$DEPLOYER_ADDR"
+  if [[ -n "${TXNBOT_ADDRESS:-}" ]]; then
+    recenter_pk="$TXNBOT_PRIVATE_KEY"
+    recenter_addr="$TXNBOT_ADDRESS"
+  fi
+
+  # If the deploy script already bootstrapped VWAP (cumulativeVolume > 0), positions
+  # are in place at the post-seed-buy tick.  Calling recenter() now would fail with
+  # "amplitude not reached" because currentTick == anchorCenterTick.  Skip it.
   local cumvol
   cumvol="$(cast call --rpc-url "$ANVIL_RPC" \
     "$LIQUIDITY_MANAGER" "cumulativeVolume()(uint256)" 2>/dev/null || echo "0")"
+  # cast call with a typed (uint256) selector returns a plain decimal string for
+  # non-zero values (e.g. "140734553600000") and "0" for zero.  A simple != "0"
+  # check is sufficient; note that the output may include a scientific-notation
+  # annotation (e.g. "140734553600000 [1.407e14]") which is also != "0", so we
+  # do NOT attempt to parse it further with cast to-dec (which would fail on the
+  # annotation and incorrectly fall back to "0").
   if [[ "$cumvol" != "0" && -n "$cumvol" ]]; then
-    bootstrap_log "VWAP already bootstrapped (cumulativeVolume=$cumvol) -- skipping"
+    bootstrap_log "VWAP already bootstrapped by deploy script (cumulativeVolume=$cumvol) -- skipping initial recenter"
     return 0
   fi
 
-  local recenter_pk="${TXNBOT_PRIVATE_KEY:-$DEPLOYER_PK}"
-
-  # Fund LM with 1 ETH (thin bootstrap positions; 0.5 ETH seed swap moves >400 ticks)
-  bootstrap_log "Funding LM with 1 ETH for VWAP bootstrap..."
-  cast send --rpc-url "$ANVIL_RPC" --private-key "$DEPLOYER_PK" \
-    "$LIQUIDITY_MANAGER" --value 1ether >>"$LOG_FILE" 2>&1
-
-  # Advance Anvil time 301s so TWAP oracle has sufficient history for _isPriceStable()
-  cast rpc --rpc-url "$ANVIL_RPC" evm_increaseTime 301 >>"$LOG_FILE" 2>&1
-  cast rpc --rpc-url "$ANVIL_RPC" evm_mine >>"$LOG_FILE" 2>&1
-
-  # First recenter: places initial bootstrap positions; no fees yet, cumulativeVolume stays 0
-  bootstrap_log "First recenter (places bootstrap positions)..."
+  bootstrap_log "Calling recenter() via $recenter_addr"
   cast send --rpc-url "$ANVIL_RPC" --private-key "$recenter_pk" \
     "$LIQUIDITY_MANAGER" "recenter()" >>"$LOG_FILE" 2>&1
-
-  # Seed buy: wrap 0.5 ETH to WETH and swap WETH->KRK
-  # Generates a non-zero WETH fee in the anchor position and moves price >400 ticks.
-  # sqrtPriceLimitX96 is direction-dependent: MIN+1 when WETH<KRK (token0), MAX-1 otherwise.
-  bootstrap_log "Executing seed buy (0.5 ETH WETH->KRK)..."
-  cast send --rpc-url "$ANVIL_RPC" --private-key "$DEPLOYER_PK" \
-    "$WETH" "deposit()" --value 0.5ether >>"$LOG_FILE" 2>&1
-  cast send --rpc-url "$ANVIL_RPC" --private-key "$DEPLOYER_PK" \
-    "$WETH" "approve(address,uint256)" "$SWAP_ROUTER" "$MAX_UINT" >>"$LOG_FILE" 2>&1
-
-  local weth_addr kraiken_addr sqrt_limit
-  weth_addr=$(echo "$WETH" | tr '[:upper:]' '[:lower:]' | sed 's/^0x//')
-  kraiken_addr=$(echo "$KRAIKEN" | tr '[:upper:]' '[:lower:]' | sed 's/^0x//')
-  if [[ "$weth_addr" < "$kraiken_addr" ]]; then
-    sqrt_limit=4295128740  # WETH=token0, zeroForOne=true, price decreases
-  else
-    sqrt_limit=1461446703485210103287273052203988822378723970341  # WETH=token1, price increases
-  fi
-
-  cast send --legacy --gas-limit 300000 --rpc-url "$ANVIL_RPC" --private-key "$DEPLOYER_PK" \
-    "$SWAP_ROUTER" "exactInputSingle((address,address,uint24,address,uint256,uint256,uint160))" \
-    "($WETH,$KRAIKEN,10000,$DEPLOYER_ADDR,500000000000000000,0,$sqrt_limit)" >>"$LOG_FILE" 2>&1
-
-  # Advance time 301s so TWAP settles at post-buy price and cooldown (60s) elapses
-  cast rpc --rpc-url "$ANVIL_RPC" evm_increaseTime 301 >>"$LOG_FILE" 2>&1
-  cast rpc --rpc-url "$ANVIL_RPC" evm_mine >>"$LOG_FILE" 2>&1
-
-  # Second recenter: cumulativeVolume==0 path fires (bootstrap), ethFee>0 -> records VWAP
-  bootstrap_log "Second recenter (records VWAP)..."
-  cast send --rpc-url "$ANVIL_RPC" --private-key "$recenter_pk" \
-    "$LIQUIDITY_MANAGER" "recenter()" >>"$LOG_FILE" 2>&1
-
-  # Verify VWAP bootstrap succeeded
-  cumvol="$(cast call --rpc-url "$ANVIL_RPC" \
-    "$LIQUIDITY_MANAGER" "cumulativeVolume()(uint256)" 2>/dev/null || echo "0")"
-  if [[ "$cumvol" == "0" || -z "$cumvol" ]]; then
-    bootstrap_log "ERROR: VWAP bootstrap failed -- cumulativeVolume is 0"
-    return 1
-  fi
-  bootstrap_log "VWAP bootstrapped (cumulativeVolume=$cumvol)"
 }
 
 seed_application_state() {
@@ -196,8 +176,8 @@ seed_application_state() {
     fi
 
     bootstrap_log "Swap returned 0 KRK — recentering and retrying"
-    # Advance 61 s to clear the 60-second recenter cooldown, then mine a block.
-    cast rpc --rpc-url "$ANVIL_RPC" evm_increaseTime 61 >>"$LOG_FILE" 2>&1 || true
+    # Mine a few blocks to advance time, then recenter
+    cast rpc --rpc-url "$ANVIL_RPC" evm_mine >>"$LOG_FILE" 2>&1 || true
     cast rpc --rpc-url "$ANVIL_RPC" evm_mine >>"$LOG_FILE" 2>&1 || true
     local recenter_pk="${TXNBOT_PRIVATE_KEY:-$DEPLOYER_PK}"
     cast send --rpc-url "$ANVIL_RPC" --private-key "$recenter_pk" \