Okay, stupid question time I expect. I damaged the Cane Creek break on my '07 Trek Pilot and decided to replace the breaks with Shimano Ultegras. So far I've only hung the front break, but it seems the caliper arms are too short to match up correctly with the rim. Nowhere did I detect an option of ordering "long" or "short" etc. calipers. Do these (obviously) just not work on that bike? Or am I missing something? Is this common? Somehow I thought (probably stupidly) that these things were sorta "standardized."