[Tom Goldman]

I have to agree with Joe ,I've been using them for years also with no failures of either their Sportsman or Elite lifters.
I also run 390# on the seat at over 8000 rpm.
Years ago one of Crowers techs told me that most lifter failures not caused by poor maintenance ,ie spring pressure or lash, were due to lateral loading of the bearing caused by the lifter bore not being perpendicular to the cam ,even after being bushed .
Try taking a new lifter ,coat the lobe with Prussian Blue and run the engine thru a few rotations with your normal spring pressure .
You might be surprised by the contact pattern left behind. PS this only works with a new lifter.
That being said if you don't like the current flavor try another , Denny makes a good product .