It's been confirmed ... compression tester arrived today with the "long neck" threads and I immediately tested cylinder #5 ... 0 ... the needle NEVER moved. I thought I hooked it up wrong, so I moved on to cylinder #6 and got a 170-172psi reading. Then I skipped back over to #4 ... 165-167psi reading. Then back to #5, just in case the gauge was acting up on the first try ... NADA, NOTHING ... I'm LIVID!

So, I call the previous owner and leave a nice voicemail since he didn't pick up his phone. I'm planning on leaving a message a day until he returns my call. If I don't hear anything from him by Friday of next week, I'm consulting a lawyer.