iv'e got an a2, and i run burns and i have the same issue, i've just got my 131 bb though im hoping this is going to solve the problem, was gonna put it on tomorow i'll let you know if it works as soon as i know. EDIT just fitted the bb, and it does clear, only by about 3mm though, my wheels are being rebuilt at the moment i cant say that it will clear when my rear wheel is in and my maggys are set up, i wont know that till wednesday.