Desperate Need of Starter Help

[gasser]

What did I do? My starter was working 95% of the time but would sometimes disengage from the motor before the motor started. I tried stretching the little spring in the bendix but that made it worse. The starter quit engaging at all. It spins fine when you hit the button but doesn't even try to turn the motor. I thought I screwed up the spring so I installed a new bendix but nothing changed -the starter spins great but still doesn't try to engage the motor. What have I done?