I just bought a pullstart for my O.S. Max and when I took it out of the package it came apart on me. I read the instructions and it said it should have a cap on it but when I looked the cap wasn't in there. I called the hobby shop where I purchased it and they said they didnt have anymore in and there truck wont get there until friday. It sounded like he was actually trying to tell me that they wasn't going to take it back. Can anyone help me try to get it back together, is there an eay way.