# ns812 sell sim attempt (testmgr, 30 Oct)
- Tool: /root/tm/ns812/sellsim_fwd.py (latest-state eth_call via UniversalRouter, fresh wallet overrides) and sellsim_hist.py (exit-block state).
- Latest-state on 40 forward pools: 39 BLOCK, 1 INCONCLUSIVE. INVALID: control pools that s777 entrysim marked PASS a day ago also BLOCK now (router reverts 0x4713c18b), so aged-pool latest-state sim says nothing about exit-time sellability.
- Exit-block (archive) sim: free rpcpool has no historic state ('result' missing); paidres endpoint returned HTTP 403 on eth_call with block param (not retried, per rules). 
- Net: items (1) v4 sell sim at exit and hand-rebuilt fills still OPEN. Only valid route = entry-time sim in the live-code lane (as s795 had) on new forward pools, or an archive-capable endpoint for dataeng/ops.