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You are confusing galling with galvanic action. Galling is like cold welding, screw an A4 stainless bolt into an A4 nut without any lubrication and there is a good chance of the thread picking up and if you try to undo it tearing off chunks of thread. It is best to mix the grades of stainless...

But what is that origional fork and tall headtube worth to our aging backs? :LOL: (RBG's frame is lovely and value for money BTW)

Love the catalogue description of the saddle - "Small, light, uncomfortable plastic unit" :LOL:

The chainstays look longish, maybe the builder felt that they needed bracing to reduce rear end wag?

Exfoliation corrosion. Pretty common with 7075 alloys I believe.

No frame number visible at the moment but I dont think that the paint is origional so it could be hiding somewhere. Dropouts look to be the same as the ACE frame. Would Graeme be willing to post (or have posted) a bio and or timeline? I find the links between a lot of the British builders...