now thx. Geoff. I'll try out the Newt 2.5 prog. to see what it reveals. I'm fairly sure that I'll end up enlarging the hole since this seems to be the safest course of action. At least I don't have any focussing probs. - that's all fine so I'm happy! Got my replacement cap screws for the mirror mounts today & was able to get things aligned so much easier.
All I need now is some clear skies to test it out, but that seems to be harder at the mo. than working on the scope <groan>. It's currently full clouds in Adelaide with no relief in sight. Mebbe it will clear in the early hours? Ever hopeful hehehe...
Appreciate the help folks!
