Builder handled the motor once we pulled it. Problem with the cam, ate a couple of lifters. I think it was a bad grind, but can't say I never saw it before or after. Grasshopper figured since it needed a new cam he would put in a roller cam. Zinc in the motor oil today is partly to blame, (the lack of it) Also when starting a motor with a flat tappet for the first time it should be run around 2000 2500 rpm for the first 30 minutes with Break-In Oil Additive. but with a roller cam no such problems That's why we were pretty blown away about this situation, because we added zinc and ran a breakin of 30 minutes @ 2200rpm. Oil pressure looked ggod the whole time, it wasn't till the next day or so and the oil pressure had dropped. Like you said, with the roller it is a done deal. Thanks for the post!