Thanks again for the suggestions, and the kind offer.
It's the side dots that are the main issue, the lines are irritating more than anything, as I tend to look straight down onto the side rather than onto the board itself. But estheticly I prefer a plain board, no lines, no dots....but it's just personal taste.
I'm not the best person for structural mods, so I'd use a tech for that. The bass isn't hugely valuable (£600 approx) but is viewed as a "vintage" pedigree being Japanese.
Cheers,
John