when I tried to put aN XTR (952)crankset on my 01 Enduro the pedal rubs on my derailler cage of the Lx E type derailler. Only an E type ( bottom bracket mount)derailler will work in this frame. The BB is a dual 68/72 model that uses spacers to fit a 68mm size frame. If I put a 2.5mm spacer on the drive side the crank on the non drive side bottoms .

My best option seems to be to grind away a bit of the LX bracket is this advisable?.