On our trick, dumpster-fresh, new-to-us 3 wheeler, the bottom bracket is shot. I tried to disassemble in order to take the crank to the shop for a replacement. Upon reaching the adjusting cone I encountered problems. The cone is off the threads. I cannot get it to bite on the threads so it can be removed. A) this seems to validate my theory that the bearings (and maybe more) need replacement and B) are there any good ideas for removing said crank without destroying it? I am certainly more than willing to cut the crank off in order to move the project forward, but would prefer to try other solutions first.