I had my 715 up on my lift yesterday and as i was lifting it up off the ground i noticed some odd movement in the rear springs. As it turns out,the stud is fused to the shackle and starting to wear the hole bigger in the bracket thats rivited to the frame. Has anyone else had this happen? I assume that because they are greasable there are bushings that are gone. My parts manual says they are not sevicable. Has anyone modified this area any different? Thanks.