I put the dana 60 back together yesterday. It looks slick but the driver's side axleshaft is frozen and wont budge one way. I can move it on one of its axis' but not the other. I put wd-40 all over it, nothing. It looks like there is a way to inject grease into it, is that true? Any ideas how to unfreeze this guy? I don't even see how I could remove the u-joint. Any help would be awesome.