Thanks all. Hope its not too late to respond. Been distracted by other less interesting things 😞
So I don't think it will work manually given the, sometimes minimal, adjustments you need to make to track something.
Originally the only issue was the circlip and I failed to find any of the right size anywhere, including Ebay, although if I wanted to pay for a batch of 5000, there was one place! 🙂
But as soon as I gave up looking for the circlip (and was forced to 'temporarily' relocate it to the loft as the 'boss' got fed up hoovering round it) that was when I left the batteries in and dissolved/damaged some of the contacts which broke off when removing the batteries. I would need to attach a new holder I think which if it worked would give me back just the circlip issue to solve. Who knows, maybe another search might turn something up...
It is a Meade mount so not sure if the Skywatcher one would fit. i guess it may just depend on the diameter of the OTA. Thanks for the offer though.
I'll keep hoping...