Hello. On a 1999 2388 w/o rock trap, the feeder reverser starter usually does not engage with the teeth on the sprocket. The starter attempts to but sings along side the flywheel like it is set too close. When it does engage, the starter won't retract until after a few minutes of running again. How do I adjust the clearance between the starter and flywheel or do I have a starter problem? Thanks so much.