Hello all. So I'm trying to bench test my OS .40LA engine, and having almost no success getting it started. I've followed all the instructions (a few times now) and the best I get out of the thing is a few turns and then it dies. It really seems to be binding up as it nears the top of the compression stroke. I swear its just as the engine starts to kick, the bind brings it to a halt.

What am I doing wrong? I took it by my LHS (where I bought it) and they tried to give it a look; they are car guys and not plane guys. According to them, all looks well.