Their will always be a debate over setting lash over hot vs cold. Hot is better, but the average racer doesn't do it fast enough to keep the temp steady. I've been through this so many times with my engine builder and this is his take on it. The lash is set and adjusted correctly during breakin once the motor is hot. Once I get it I check and see what feeler guage will fit. I don't care what size it is. Just get my feel for it. Noone can tell you .016 - .018 cold or .022 or .024 is perfect. Everybody has a different feel for .022. Some tight, some loose, some snug. .002 isn't going to make a difference, but they all need to be the same!! If you error do it on the tight side! What I'm trying to say is set them the same everytime YOURSELF. Smaller or lazy cams likes more lash, but even that isn't always 100% true. A good valve train SHOULD NOT MOVE. IF IT DOES SOMETHING IS WRONG!!! Take notes which ones you have to adjust and which way. If you have to keep getting tighter you probably have a seat problem. Bottom line is if you have to adjust the same ones next time look at everything really close!!