Originally Posted by
ultraman6970
Probably u can replace it (the axle), OR... use the cone thing, the one that press the bearings (sealed cartridge?) to redo the thread. Just unthread, unscrew it and it will redo the missing threads. I dont know what it will happen with it after wards but it should work. I got the same problem years ago and i fix it like that.
OK I tried this and it fixed the problem. Thanks. That black nut that presses the bearings is made of steel I found out. I just screwed and unscrewed it till the thread smoothed out.