Hi,
Since I'm selling these to raise money for a charity music project I volunteer at - plus to help clear my loft! - I hope no-one will mind me saying that I've just put a handful of 4000 small faders for auction on UK eBay. (Unfortunately I only sell in the UK as it's such a pain shipping abroad now

)
https://www.ebay.co.uk/itm/306591062583They've got backstop switches on them, anyone got any idea why? I'm assuming it would have been for a custom 4k, although it could have been for some prototype of the 9k or the ARC / Bertha.
I might find a few other bits as I sort through things. All helps pay for some guitar strings for the kids, people have been really generous donating instruments to us, but it's been keeping me busy refurbishing them - good fun actually!
I'd better catch up on the posts on here now I'm here - work and other life has sadly kept me away for many months...
Cheers,
Andy