I have a 2012 XO Chainset but I cannot get it to fit a new BB as there appears to be a step-up in the spindle diameter on the drive side. I am pretty sure the one on my other bike doesn’t do this. Have they changed and do I need a specific BB?
Clearly I could take the other one to bits and check but am trying to avoid that!!
Yes, the drive side of the spindle will bottom out on the DS bearing. If there is not enough spindle on the non-drive-side to allow the NDS arm to do up without binding you may have your spacers wrong.