I sent them the head from the rear cylinder on my 750 GT for the exhaust thread repair and received it back in four days. Charlie repaired it the same day he received it.
Great work!
I'm told by them that they are working on getting a web site up and running.
Contact information for them can be found at the top this index. (Exhaust thread repair, sticky)
Before
After
The repair adds about 2.3mm to the depth of the threading which gives you about three more threads to hold the nut.
They also do aluminum repair and can repair threads on most any motorcycle.
Dean