thought id do the o/s ft brake disc change today 8v to 16v discs all seem to be going well into i bloody snap off the bleed nipple took it all off again after wd 40 and freeze spray didnt shift it in situ had to drill the thing off i just hope i havent killed the callipers managed to drill i hope(using a stop)up to where the nipple finishes in the calliper and didnt have to re tap it , guess il only know when i go to bleed the system has any one else ever done this?