I went with the aftermarket mount and trimmed as needed to clear the steering joint.Did you ever get this resolved? It looks like I may have the same issue. I tried to test fit the borgeson joint on the rack by the engine frame mount and I can’t not get it to fit. It looks like I will have to remove the frame mount to attach the joint and then put the mount back. However I don’t think I I’ll have clearance for the joint/steering shaft on the rack to clear that mount. I have the entire CBR kit with a manual rack.