Fresh bottom end, rebuilt head, HG, carb rebuild, intake gasket. Replaced dizzy with a FJ60 large cap type, did not help. It only pulls 12lbs of steady vacuume. Been all over it with either, no vac leaks. Idles smooth when cold, wont idle when warm, then if you hold it at like 1000rpm's, it revs up to like 2000 then back by its self constantly? WTF I am tired and stumped. Ideas? Thanks!