52Carl, yes, the insulator is on the left in the pic. I used one gasket at the carb base only, none below the insulator. Mark, I'll search carbking info. I think I might just mount the YF without the insulator and just the gasket just to see how it works. If not good, I'll put the Rochester back on. This is one of those "what if" moments that I had when messing around with the engine.
