ok hers an update. i went back to the machine shop and talked with the guy there. he checked it out and said that it could be one of 2 things is causing the crank to bind when torquing it down. that the block was not line bored when they installed the main studs in the block, or that the crank could be bent a little. so i asked him how much that would cost to get it line bored. he said about 150 bucks. he asked me to take it home and set a dial indicator on the #3 main and turn the crank around to see if it could be bent. did that and the needle didnt even move.so he let me borrow another 302 block he had at the shop so that i could put my bearings and crank into it and see if the same thing happens. that will let me know if it the caps or not.