My friend bought my old 93 z28 and he had the engine Rebuilt a few months ago. Just freshend everything up. He drove it all last month no problems and he goes out one morning to leave for work and the starter breaks. So he thinks no big deal I need a new starter. after installing two more starters it just keeps breaking them off around the nose cone around the gear. What could be the deal with this ? Big thanks to anyone with info :hail:

