I have a 2001 Xplorer 400 4X4, the rear bearings keep going on me. I have fixed them specifically according to the repair manual, its like i can't get everything to stay in the casing, I have everything torqued to spec. I haven't even ridden it for more than a couple hours and it's hooped again !!! Somebody please tell me what is going wrong here, I'm pulling my hair out !