The consistency of the wrinkle was less of an issue compared to the odd flat spot, there are some areas that have a finer grain than others but my main bug bear was the handful of flat spots the size of a small rain drop which you can only really see when you look at it in the light from certain angles, its 1000 times better than what it was though and when im done with my engine bay tart up ill do a before and after pic.
For the letters it was more the staining that i wanted to get off, a mill sounds like a great idea if i had access to one, but i think next time i will sand the letters clean before i paint, then scrape off with a plastic blade while the paint is still somewhat soft, any residue can come off with some q-tips and solvent.
I have a B-Series cover i might have another bash with at some point.
great work there! well worth it
very smart 
