If you are breaking a rocker with what you have that is 100% a geometry issue.
No id rather question the not so high quality 440 source china rockers at $229 a set.
Just use a good quality rocker.
Not everyone needs B3 spacers and shims, some who use quality rockers and set them up semi well never ever break a rocker or wear parts.
If you are breaking a rocker with what you have that is 100% a geometry issue. There is no reason an almost stock rocker wouldn't take what you are doing.
Rockers almost never fail with what you are doing. There is a possibility it was a rocker failure but I seriously doubt it.
Again, as I've said so many times, if you did not use the B3 geometry correction kit your geometry is wrong. Call Mike at B3 racing engines and talk with him before you spend a bunch of money on crap you don't need, and once you do spend it, you'll still need to call him and get his kit.
Pay him now, or continue to break stuff later. Or, you'll just have a miserable valve train. Why that is acceptable to Chrysler people I have no idea.
