Originally Posted By: mlord
The original Mk2 empegs have blue coloured through-hole encoders, and the Mk2a RioCar units normally have green-ish surface-mount encoders.

So much for my memory: the above description is somewhat backwards. The blue ones are indeed from the Mk2, but were surface-mounted. The green-ish ones were for the Mk2a, and are through-hole mounted.

Cheers