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@thebrenthamtaffy
M-X.
I have a similar problem with my Pearson AN6 track frame. It's about 7 years old and only has stainless steel inserts on the outside of the dropouts to protect the aluminium from the knurled facing of track nuts. Problem with this, is that to get the track nuts to grip properly against the stainless steel surface the unprotected inside face of the dropouts gets mashed by the knurled surface of the hub locknut!
I'm going to track down some Stainless steel inserts. File back the inside of the dropouts until flat again and then simply drill and tap the dropouts to accept the steel inserts. Is all you need is a pistol drill, correct sized drill bit and a cheap carbon steel tap/holder and you can fit them easy.
yer doing well on 20 year old aluminium frame... have you checked it for cracks recently? :)
Ta!