I have a largish supply of MK2 encoders here, courtesy of Hugo -- 24 of them remaining in my bin. Anyone who wants one in North America can have one for US$5 to cover packing & postage.
Unfortunately, I didn't acquire many of the MK2A encoders, though, and no longer have enough of those to continue distributing them as spares.
The difference is that the MK2 encoders are designed for surface mounted installation, whereas the MK2A ones have thinner pins for through-hole installation. The latter also have slightly shorter, knotched, shafts where the button attaches.
So, anyone with a MK2 unit who wants a new encoder: paypal me
([email protected]) US$5 and give me a shipping address. For MK2A, you're outa luck for the moment, but I may see if I can get hold of another handful of those from Hugo.
Cheers