Thanks for the reply.
Yes, I did look at the SX Mini wheel but it doesn’t accept 2″ filters and weighs pretty much the same as the Midi anyway – 800gms or thereabouts.
The Trius 694 clocks in at 450gm. I doubt if the Lodestar guider makes much difference.
So the whole thing is a decent weight – which seems a lot at the end of a thin Newtonian tube. 🙂
I will try tightening the central screw by tiny amounts every evening and see how it gets on.
BTW the Midi wheel can take 2″ filters – it has two wheel options.