I recently buy my first Quarq Dfour power meter to replace my crank Shimano Ultegra 6800. but I have the problem that the quarq spindle its too short ( 106 mm quarq vs 109 mm shimano ultra ). I don't know if I buy the correct quarq ( GXP or BB30 ) and I don't know if I need change my bottom bracket ( actually I use Kogel Press Fit BB30 to 24 ceramic.)
I want use the quarq but I don't know how fix this issue.
Do I need change my actual bottom bracket to another ? ... que quarq dfour its correct for my frame ? ( my bike is a Felt IA2 2016 ) ...