I have a 95 KTM 440Mxc. I just bought two new tires, the front when well, the back is killing me. The axle is stuck, I have soaked it for two days in penetrating oil, pounded it with a rubber mallet, framing hammer and wood block, a huge 8inch nail with a head bigger than the whole and a hammer, and finally a air chisel. It will slide front to back on the swing arm, but will not slide out from the wheel hub. I am guessing the bearing sleaves are stuck, or a very bent axle. The tire still turns but it does have a bit of a grind. I think I didn't grease it before it was stored for the winter. ANY ideas guys??????