My Honda ATV has a splined rear axle and hub with the hub being held on by a castle nut. Someone at the factory 20 some years ago did not get the castle nut on exactly tight and has caused the splines (about 40 splines on a 2 inch axle) of both the axle and hub to wear about half away. I can get a new hub which will fix half of the problem but what can be done about the axle? I do not want to replace the axle or weld the old hub onto the axle. A guy at work said there was a repair plastic or epoxy that he has seen used on semi truck drive shafts but does not know anything more. Anyone have any suggestions?