If it moved before, it pulled out I believe. My worries were if the rear could somehow push forward when hitting bumps sliding it forward but the shaft had thick grease/dirt build up on the splines that were showing. so I'm assuming the rear end moves away making the nice and greased splines show when hitting bumps and then hides away when riding smoothly... not sure but if they were dirty they obviously weren't getting used. I actually cleaned it off so can't use that for referance. Lol
But I had to get a box cutter to basically cut the dirty grease outta the grooves then used a flat head to fine tune my cleaning so I could move it all the way down the splines without major force. So my guess is it doesn't move much cuz I have been hauling rock down a pretty bumpy road. so I would assume that rock haul would move the driveshaft on the splines cuz I know my springs are close to overflexing at times with a load and some of the bumps but I try to go slow in the real bad spots now that I know them better. And will take it even easier now that I know about this if it's actually an issue.
