I've just been cleaning engine parts the last couple of nights.  That and still trying to free up the crankshaft.  I got myself in a bit of a bind doing that.  I was hammering on it with the impact wrench, and the pulley bolt broke off in the end of the crank.  I have to hope I can drill it out and get it backed out with an easy-out.  In the process, I did find out that it's locked up because of the piston in the 3rd cylinder.  I can move the crank in all 3 main bearings, so that just leaves the piston.