I have a 88 300trx it is still in good shape except that i need to replace the u-joint going to the rear end. I was able to get the old one out with out takeing the swing arm off. But it apears that i will have to get the swing arm off to put the new one in. On the left side of the arm is a hex nut (17 mm) on the right side is the same thing only it seems to have a lock collar of some sort on it. Can some one give me some advise to getting the swing arm loose such as are the threads left of right and how do i get that lock collar off. Thanks