Vintage Synth Repair

Hi.
I've decided to sort out my Minikorg 700. (Not 700s).
It has one missing key (F), and half of the G key missing too.
The power switch is broken (stuck ON), and there are several missing sliders and knobs. The woodwork is poor, and has been painted black.
There are some pictures on my website here: http://www.nervejam.com/projects/minikorg-700/

However, I'm having trouble sourcing parts, especially the keys. They are the same as MS-10/MS-20/Moog, so they are in demand.

If I can't find replacement keys, I'll have to consider breaking it up (shame as it works), and selling the parts on eBay (the keys alone would raise a lot of money).
(I DO have a spare Lowery keyboard, but fitting that is going to be a major pain.)

Can anyone help?