Thermoquad low vacuum readings

FWIW, I’d tighten up the door a 1/2 turn and see what that grabs you. The larger jets would be better on the power return. Enrichment would be a good idea IMO. The carb will only enrichen when the warmer weather returns. He is VERY lean now.

Leanburn engines ran up to and around a 17-1. He doesn’t need to push it.