Not Ranked
A good shop will set the depth of the valves on the seats as close as possible to each other and then cut the length of the respective stems so that when a machined straight edge is laid across the stems, they are all the same height. Otherwise, pushrod length (as you discovered) will vary considerably causing the valvetrain geometry difficulties.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
|