Lifter problems????

ok..lets see if I answer all of these:

1) It has a Mellings Hi Volume pump (as new as the motor).

2) I figured at start up is might tic, but once it's warm the oil should be thicker than SAE30. Am I wrong on this one?

3) Drainback of the filter is not an issue, although it might be of the lines. (see pic below of setup). Dual filter sitting upright, lines are arced up at the back of the mount so only the first 12-14 inches of line could drain back in to the pan.

4) Filters are AMSOIL SDF15 and BE90..some of the best available anywhere. I thought the bypass filter setup might be a bit too much restriction, but wouldn't that INCREASE oil pressure?

I think if I was wiping out a cam, it wouldn't be a result of changing oil?? This is serious stuff. Even the guys at the warehouse use it in thier race cars after only a few hundred miles (Lola Chassis SCCA cars). COuld it have already been failing and it only showed up after changing viscosities?

I'll recheck, but I think the oil pressure does get up around 50+ at highway speeds (I have 2.45 gears, so thats only about 2,000 rpms).