Proform push rod problems

Anyone else have issues? I have a mild cam, j-head, 408 with 273 rockers. When I did the rockers I needed cup and ball push rods and bought a pack of harden Proform from Summit. So put a few hundred miles on them and started hearing a little tap tap so pulled the left side cover. I found that one of the cups was wearing away rapidly so I had to buy another pack of 16 just to replace this faulty one. A few weeks ago started noticing a tap tap one the right side. Pulled the cover for inspection and found one that the ball crumbled and fell apart. I found all the big material and the lifter seemed ok.
I've lost all faith in the rods, anybody have any suggestions in a different brand that you have had good luck with. My cam is small, .480 lift, so maybe even stockers would do. Thanks