Front Brake service
 

Hi, I had the fronts brake serviced got some questions.

The caliper guiding bolts, I had cleaned them up on a buffer wheel and reinstalled them. Do these go bad in anyway? bent?

What role do these play along regarding calipers...REPAIR KIT GUIDE BUSH #34111157038 Is this something that would cause an issue?
http://www.autopartsway.ca/autoparts...1676~241676~22

I read post#9 in this thread that they can give/flex? http://www.xoutpost.com/bmw-sav-foru...r-part-ii.html

Thanks,