Yea, I showed the seller the PSI reading and talked him down. Bought it right. Got lucky the guy was reasonable.
It starts easy, idles and runs good. Missing a little torque down low while cutting. Cuts like butter though when you wring it. I'll see how it does with the hedge trimmer head on there.
I'd have bought it for full price judging by how it runs. The saw head doesn't take as much power as a trimmer or hedger trimmer head. Glad I brought my compression tester. I'll probably post back up after I order a piston and ring set.