Elmer46, you're funny! If that B fit I would have already put it on the 216 and given you mine!!
I'm hard pressed to believe that it's the timing since it ran fairly well before I tore it down to rebuild the carb. Something is just not right. I think the carb base needs that extra gasket sitting on top of the insulator so I'll reinstall that and give it a try. Short of that fixing it the only other thing I can think of that would have changed would be the needle valve. Maybe that's not set right. Backed out 1.5 turns is what the instructions said. Would a misadjustment on that needle valve be causing me any problems?
Thanks.