Resurfacing sticky buttons

[mario64]

I have a Gransport that I’m tidying up, and I’d like to do something about the sticky buttons. The centre console is fine, but the air vents and hvac controls have all gone sticky.

What are my options to fix them? Does anyone have any recommendations for someone who can resurface them?

I’m happy to remove the offending items and send them by post, so it doesn’t have to be someone local to me in London.

Alternatively, has anyone successfully done a DIY resurface and can offer tips?