No photos, but I'm trying to tear down this Burley tandem to clean things up and put it back together. Been fighting with the crank bolts for weeks now. One bolt came loose without issue, but the other three have been stubborn in the extreme. The heads are very low-profile, and none of my 14mm sockets can get a grip on them. I've torn up both the sockets and the bolt heads to the point where even a new socket can't grab hold at all. Drilled a hole in one of the bolts to use an extractor, and the extractor both tears out the hole and is getting torn up itself. Honestly not sure what to do at this point.