So here's the latest. Heads checked out clean regarding any leaks. However my engine guy "Automotive Machine of Scottsdale" did find that five of my intake valve stem seals were destroyed. He called and asked the lift of my cam. I didn't have that information since it was a Chevy experimental cam recommended by my first engine builder - who has an excellent reputation by the way. Having a dial indicator and magnetic base I went ahead and found that my intake lift is .510" and the exhaust .504" - too much for the stock valve stem bosses. So he cut the bosses and the spring seats and I'm not reassembling the whole mess using Fel-Pro 1003 head gaskets. I'm anxious to see the results. By the way, TPI's are one pain in the arse to assemble - why did I want to put a computer engine in this car I'll never be able to explain properly. One more thing, the heads were out of flat by .004" & .005" so he did a clean up of .005" which didn't affect the match to the intake.