took my car to a mechanic and they installed a new starter and headers on my 1967 mustang
. the starter literally fell out twice. It is hard to get up in there as the headers are welded right below the starter. I had a whining sound from my starter and would not start the car. I put a longer bolt on and tightened it down. now when i try to start my car I hear and feel a loud bang. coming from the starter. I did some research and found that I need to shim the starter. I did notice that there were two washers between the starter and mount. I am not sure how to shim a starter. can anyone tell me the correct way? or tell me what exactly the problem is? Initially when I tried to start my car it turned over and ran fine for a few moments but then the idle was too low and it stalled on me. when I tried to restart all i heard was a whining from the starter. That is when I found that the starter wasnt even mounted. I then Tightened it and that is when I started getting the loud bang.