I've been taking apart my 350 to have the frame powder coated but I've hit a roadblock at the swingarm. I can't get the self-locking nut to budge. I've tried WD-40, I've tried heat, I've tried banging it with a hammer. Nothing has worked. I gave up when I started to round off the edges of the nut and thought I'd stop in and see if anyone has any advice on this.