I got my letter a few days ago and have done chuff all about it. My original thinking was "I can't be arsed riding to the dealer and will wait until my spring service". But that attitude was making me paranoid that my bike would either a) spontaneously combust in the shed, or b) kill me on my next ride when the brakes fail as I'm entering a 140mph knee-down hairpin corner. So, I'm going to fix the problem myself (with the help of the notes and advice here and on the KTM forum). Wish me luck - with my mechanical knowledge I'll probably end up cable tying myself to the exhaust and give myself 3rd degree ball-bag burns.