#2 cylinder not burning hot?????

Moparlover, i pulled the head and found valves are not same length meaning someone at previous machine shop (no names mentioned for now, but i would like to) did not cut valves to proper lengths. Would this cause hydraulic lifters to pump up during engine operation and keep valve open? Evrything checks out to be within specs while engine is sitting still or while cranking. If so, i believe this to be the problem. I will keep you posted as i am putting on a set of different heads now.