Nikpottala, I'm sorry for any inconvenience this cost you. I had another one notify me a couple months ago about his doing the same thing at 9,000 miles and just thought it was an isolated issue. I have contacted a couple other people I built shafts for and they both have over 25,000 on theirs with no issues. At this point I think I'm going to stop doing the shafts until I figure out what is going on. I'm not sure if it's something with the hardening or if it's the coupler in the case doing the damage. I noticed yours looked rusty again, were the splines greased when assembled and what condition was the seal in. I suppose if someone wants one for a quick fix to get by for a while and take a chance I'll do it but Im currently out of stock on splines right now so it will be at least a week before I get more in if I even order more. If any one else had a problem with my repair please let me know so I can try to figure out what's going on. I have about twenty more out there somewhere. Thanks, Tom.