well i did'nt have the 5151R, it was just the 1515. it did grow longer. i'm now going to bite the bullet and get the system one and be done with it. the question is if any one out hear has had the similar thing happen and how did your bearings look? i don't want to take apart if ness but will. lets hear if you have any imput. i did drain the oil and theres a lot. it did'nt run dry or even close.