Hi Colin,
Good to hear, I have only had one Greenie here that was fitted with a diff lock and I only clicked it in and out to make sure it was working. With the diff lock disengaged it makes turning them so much easier. Sounds like somebody has scavenged it from a Greenie. I have often wondered how the conversion would go on an earlier Greenie I built for Sheriff in the Club because he is having trouble turning his with both rear wheels driving. Anyway good to hear your drive is now working