So I decided to do a tear down cleaning and to replace a few parts waiting for my new mill. While doing that I noticed my driveshafts are wearing flat edges, so I decided to get the new light weight blue ones from Cen. Are these really lighter than stock and are they stronger? I am also putting all new bearings in all my diffs and the 1 opposite of the spurgear on the center diff will not come off, anyone had this problem before?