Only 1 valve is out of spec. It's an exhaust that has only .08mm clearance (spec is .2-.3mm). Since I've got a loud ticking noise from this bank.....I'm kinda looking for a loose valve. This is the opposite (as would be expected). I can't think of any reason why this (tight valve) could make ANY noise....but want to check you you folks first in case I'm overlooking something. If anything, that one should be nearly dead silent, right?