I'm beating myself over the head after trying to mount an FSA Gossamer crankset into a Shimano BB. My MegaExo BB had developed play, and drag, and squeaking, so I thought I'd replace it. Bought the BBR60 cups, got the TL FC-25 adapter, and torqued it all down properly.
But the spindle is way too tight in the BB. Apparently FSA's idea of "24 mm" is noticeably larger than Shimano's. I've read multiple people online stating the combination works fine but that it might be "a pretty tight fit". (I should've stopped when I realized how difficult it is to even get the crank started through the first hole.) So I forced the spindle through, and without even putting the NDS crank on the other side, there is noticeable drag. I'm guessing the oversized spindle is putting undue radial pressure on the bearings and preloading them like that.
I'd take the loss as a lesson, put in my old MegaExo BB, and try to find a replacement for it (or find a Shimano crankset). I'd even accept just sticking with the BBR60 since the drag between it and the MegaExo is about comparable.
But the crank is stuck in a position that's neither here nor there (see picture below). I can't get it completely in and it won't budge if I try and hammer it out. Is there anything I can do here at all to either remove it or mount it completely? As-is, it doesn't seem it would budge even on the road, but it also completely ruins the chainline.