If they are hydraulics, I would adjust them as your mechanic said. I like to go beyond the final setting to make sure that the lifters aren't sticking. If it were a quarter turn, I would go to half and then back off to a quarter.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!