If you do get a stuck one; hit it with lube, use an aluminum block to protect the thread. tap/drive out a bit. Stop, relube, drive it back in, repeat until it is moving along nicely. A stuck part tends to gouge and tear off chunks of metal, they continue to gouge all the way out often ruining the parts. Going back the other way frequently stops that and allows a much easier removal. turning the axle back and forth helps the process too.
I had one so bad the nut was mashed to junk by the PO. back and forth, twist (broke off a screw driver in the axle "locking hole") but patience and back and forth got it out. I had to saw slots in the nut and split it off the threads. I saved the axle.