I've already had an avalanche of responses from my fellows on the Diesel forum stating my mechanic is a quack and trying to get extra $ out of me.

He said that he's seen dropped valves after going from screwed-down-tight to factory specs in one adjustment and i took him at his word.

i was heading out of town and didn't want to take a chance.

so IF i do have low compression in some or all cylinders is it due to the valves being too tight or something else?