Ok so at work its called "fault isolation"...and I'm needing some on the pig big time. Did a wet and dry compression test and its looking pretty clear that I have a problem in the valves somewhere. Dont have a leak down tester so gonna break off the head today and try to figure this out. Whats weird is I'm getting 120lbs w/o the decomp pulled in but 0lbs compression with it pulled. I'll have it off here in the next hour so by the time I check up on the post here....where to start looking in my valve/head area?