It says right on the GXP installation instruction sheet that if you experience any play after installing the crank at the recommended torque that you should remove, regrease and reinstall it until the play goes away. The self-extracting bolt on the NDS side often needs to be broken in before it will seat properly.
Do not ride it with play in the BB/crank.
Last edited by Scrodzilla; 07-19-12 at 04:22 PM.