This should not be a problem. Does the bolt screw in easily without the caliper? If not I would spry some wd-40 in the hole and try again. If still hard to turn it could be cross threaded. Also while the caliper is off try the other bolts in their respective holes. Regarding lining the holes with the caliper it should fit perfect since it came off. When I did mine I kept the first bolt loose until I started the other bolt. I've done about 3 sets of these on different SC's and never found the bolts to be a problem. Good Luck
the azz