440 5L and 5R ISKY 1.5 ductile iron rocker arms.

twayne24365 said
Friend of mine had that problem, bluing and galing shafts...”not breaking them tho”

Ended up honing the rockers to gain a little more clearance and solved the problem, I’ll bet yours could be on the tight side, also grooving the shafts will help if it isn’t already done. Hope you can find what your looking for!

I had just over 13,000 miles on these with no issues. It was probably just fatigue or I possibly over torqued it. I had some retainers crack and fail in December on this same build.