I bought a 60 about a year ago with a stuck engine.  I tore it down enough to free it up, cleaned up the pistons, rings, etc and honed the cylinders.  It didn't appear to be in bad shape so I put it all back together.  It has almost no compression.  I pressurized the cylinders and air can be heard blowing past the rings and into the crankcase and out the exhaust.  It appears an overhaul is in order.  If anyone has rebuilt a 60, I would welcome your input on where you located parts, who did your machine work, etc.  I am in western Iowa and need to know where to start.