Originally Posted by dreamstang
I forgot it reply the earlier
Imo.. I think your not properly preloading the lifter.
How much preload did you put on the lifter?
Did you tighten them in the proper firing order?
I think the 1/8 turn is what is being used for lifter pre-load.
If I remember correctly 1/8 to 1/4 turn or up to .090" is what is needed?
What I'm wondering is that if the lifters are pumped up enough when she is making the adjustment.
If not then they end up being way to tight, which might explain the broken studs.