Ok guys, I got it all together but I’m having some minor problems. I reassembled the engine with the nice link pins and made sure cam timing was correct, as well as the different length pushrods and pushrods covers were installed accordingly. I also checked the valves to make sure they move freely. It seems great without glow plugs, but when I put glow plugs in, it seems there is so much compression that the prop is hard to turn over. Is this normal for a new engine? My electric starter cannot turn it over, and I can’t get it to spin much by hand either. I also could use some help with how to wire os-type F plugs to hobbico 1.5 volt batteries (i have 2) with the standard harness that comes with the engine.