Back in 2008 I purchased an ole 18-27 with a stuck piston. My project got derailed and I lost contact with most who I had talked to. Its been soaking all this time and still stuck. Was using PB Blaster but a couple weeks ago I switched to Acetone/ATF mixed 50/50. Right now my biggest concern is the water jacket are full of rust chips and I dont have a clue how to get them all out. I will post more as I get deeper into it