Glad to old 928 bushing fix is working well for you and hope it lasts a long time.
The Mitch Leland bushing fix was developed some years ago as a better mouse trap
and has been the "go to" fix for most Pelicans for the steering bearing problem for years.
It is so effective that Redline bought the rights from Mitch and now market it
as the most effective fix.
Over the years the 928 bushing can cause shaft deterioration problems
as noted by 911 guru (John Walker) on this forum, due to metal to metal wear.
That can create a need for the dreaded complete shaft replacement.
The best thing about the 928 bushing is the price!
Read this thread re the problem by John Walker, toward the end of the thread (post 52) Mitch Leland posts his "new fix"
to address all the problems the thread had addressed. That bushing is the one now made by Redline!
http://forums.pelicanparts.com/porsche-911-technical-forum/372487-problems-arising-metal-steering-bushing.html