As 2d said you should definitely look at the hex pins, but I just ripped my lst2 all apart and the ball cups where the axel and the wheel hex meet didnt have any grease on them. I would suggest taking off the wheel hubs the then take off the c-hubs (where the a-arms connect to) and in the round cup where the dogbone and axel meet there is also a pin in there, thats also where a light coating of grease should be applied. I ran mine in the snow and some mud a few times, actually like twice they are were a little rusted. Also the set screw for my wheel hexxes wasnt loctited either, so you might want to do that also. heres some pics.