The Valve springs were not new when you bought the motor from me. I re ringed it, new bearings, put a 'street' roller cam in it, New timing chain, etc. and such just like we discussed. basically, A freshened bracket motor with a new cam.

I'd test the valve spring pressure just to be sure. It's been so long, I don't remember if they were new with the previous roller cam or not. With a Solid roller cam, and street driving, it's a good idea to check the springs once in a while anyway.

I wouldn't get carried away with worrying about the open or closed pressures when using an on-head tester, but rather seeing if there are big differences between the springs, and if one seems to get weaker faster than the others.

Anyway, that being said, I'd take the advice of others too, fuel pressure, and maybe try a pass on a mix of race gas and not Meth inj.