I just took a head that I ported and polished and put on another predator. The motors are identical. When I went to start it the pull start cord came out of the rope. What do I need to check before proceeding? I didn't torque the head( I know BAD). I took the plug out and it turns over pretty good with no binding. Just need to know what to look at before I try to start again. The motor is stock with the screen removed out of the exhaust, the governor spring moved and a ported head. Everything else is just like it came from factory. Also the pull start cord doesn't retract all the way....is there a secret to getting that to retract?