I know this is an old thread but have you had any more dealings with this machine? I have just got an after market axle I am looking to make work on my early 85xt with the inboard seal by opening up the spacer like you did on your first repair- it seams like a futile effort if both machines in this thread axles broke so soon!UPDATE! If any one is wondering how long an aftermarket axle might last, I'm going to say 6 months!
I just heard it was broken today. I'm not sure how this will play out.