The bad news is that it is definitely a valve. The good news is that the old Nascar trick calms it down to the point where it runs well enough to get it on the trailer to go to Chateau Elan. I have already given up on the Ebay carb. As soon as the valve issues are resolved, I will be shopping for a new carb. Thanks for all the input. I know I was in denial. Trying to get all these performance parts to work together has been a challenge for this old shade tree wannabe mechanic.