My right brake hood seems to vibrate all the time like it is loose when you apply the brake–alot of play compared to the left. Any help?
I seem to remember reading that the little plastic caps rattle on some of the older Ultegra STI shifters, but Shimano fixed this problem a few years back. Assuming that your problem is that you have one of the older models, I think it’s just a matter of getting the new plastic caps. Not positive, though.