I have a set of small block 1.6 stainless, they work good with beehive springs but need to be ground off to clear 1.5 dia springs.
They have about 100 runs on them now on a .480 hyd cam.

I'm putting them on a .646 solid roller and I'll update when I get some runs on it.

I just had one that the roller axle was loose, Returned it and they are sending a replacement. Jaime who seems to run the show said he had never had one returned with the roller axle problem before. the other 15 are fine.