Try getting a Cannodale dealer to order this part for you. Cannondale QC850 it is a longer spindle to give you more clearance on drive side. Also includes machined bearing shields
increased q-factor, for those who care about such things?
the sram s975 is another option (for those who haven’t yet purchased) – seems the way the crankset is set up on a bb30 frame there is a DS spacer that allows for more clearance with a magnet.