I was in the process of having my head built so I did a compression and leak down test before pulling the head to just to check it. Found that #1 cylinder had little low compression at 210, after doing a leak down test found it was leaking 60% by the rings, after pulling the head and pistons I found #1 had a broken top ring and second ring was stuck in place. The piston is damaged from leaning out with the fuel pressure problems I was having, cylinder walls look good and all other pistons look good. I have a spare engine I was planning to send to inlinepro after mine blew up, but now I'm not sure on what to do. I have a set of bc 625+ rods collecting dust so I'm temped to use them with a set of inline pro frm pistons new acl bearings and let it rip to it blows up. I wanted to see if anyone is using the frm pistons from inline pro can't find much info on them.