Here's an update on my a/c problem. I found that nothing was wrong with my r12 compressor installation. I simply didn't charge the system properly and it wasn't warm enough. The weekend in May that I tried to charge it it was only ~ 55F. Also, this time I statically charged the high side 1st with liquid from my r12 tank and then ran the compressor and charged the rest of the way from the low side with gas. Works great now!