I recently bought a Fuji Norcom straight 2.5- https://archive.fujibikes.com/.../norcom-straight-25- . The BB that comes on it is a Oval Concepts BB86 press fit. I am wondering if this is compatible with an ultegra 6800 crankset or if a different BB is needed? I have read different things about the Oval Concepts having a GTX version that isn't compatible. Is this all of their BB86 or only some? And does someone know how to check between the two? Any insight is appreciated.