Does anyone else loose the round plastic cover that protects the telelever bearings. I've just lost the brake side one for a second time and I've only had the bike for a couple of months.
It goes around the cover stub that gets pressed in the hole for the telelever.
Best bet is to go back to the shop and have them bring up the parts page on thei computer and have a look. The parts and tech guy at my shop had no idea there was an O-ring until I pointed it out on the computer. It is really a skinny ring and is easily missed.