starter issues

I just got finished putting the trans back in my 65.Its a 340/904.At this time I installed a mopar mini starter to replace the old full size unit.I have never had a problem or had to use a shim on a mopar but this unit makes a shrill noise when starting.Does anyone think a shim will help or do I have a bad unit?This is the same case / converter that I just rebuilt so the starter is the only change.
Author: admin