Really appreciate the in-depth reply, as always! I'll look into the DIY process but in general, I'm not overly confident when it comes to this sort of thing, feel like if it can go wrong, it will for me!
I thought a full strip down would be the case, no problem!
The frame is a Curve GXR and the areas I want anodising are already a sandblasted finish, assuming I've understood that correctly.
I'll look up the two mentioned companies, thanks again for your help.