I am trying to get ths pully back on using the Pulley puller sent to me by 3800 Performance and I broke the 2 little bolts that hold the large bolt in place. I have about a quarter inch to go. I am using grease to keep everything moving for the bolt the Shaft is not moving I am using a bar to keep tension on the Belt so the shaft does not move. these are breaking right in the middle so it is not backing out on me. WHat do I do. Should I go and try to get a few more of these at the hardware store I guess is there a kind of harder metal I should look for.