[Bobcat]

X2 on the pinion support for the starter . I had a CVR and Powermaster starter that had no pinion support . The Powermaster wouldn`t mount up correctly ( only had 1/3 flywheel gear engagement ) and I sent it back. The CVR failed and the shaft ended up at a 30 degree angle . What happens is that the pinion gear on the starter tries to climb the flywheel gear teeth . This puts a tremendous sideload on the starter shaft . It also causes the flywheel gear teeth to handle the full load on a reduced portion of the teeth .
I bet if you look closely at the starter and flywheel gear teeth , you will see some odd wear patterns .
Went to the RobbMc starter with pinion support and love it .... also get full gear tooth engagement .... and it`s easier to mount .
These engines put a lot of load on the starters ... especially if you have high compression , large displacement and anything over 18 degrees initial advance on the distributor .
Good luck !
Bob