Bert bell housing question

[racing23s]

I have a Bert bell housing on my 602 and when I go to start it the idler gear that is activated by the starter will start to turn the flywheel for about 1-2 seconds and then it just slides back and grinds on the flywheel. It is a new flywheel but the bell housing is used, Is there any thing I can do to fix this problem. If I hold the idler gear out with a screwdriver it will start fine and drop back into place fine.

[Matt49]

Sounds like a problem with the starter

[b1driver]

They make flywheel shims that are.020, we run two behind the flywheel because we had the same problem, u can get them anywhere that will turn stock flywheels