I have used 5 MP hydraulic cams..and probably another 6 solid lifter cams from MP..

Not one has ever had a lifter problem..

In fact I bought 4 of their oval track cams went MP was dumping them for 35 dollars for cam and lifter with the intent of just using the lifters...solid and hydraulic.

I have used up all those lifters and never had a problem.....so instead of I heard...here is I have.

Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)