Cheers Paul
Happy to be a member of the frustration club, in something of a sick and twisted way
And you are spot-on about collimation. I've not tweaked it yet, although it looked good the other night on a star test at good mag (10mm EP) on a 2nd magnitude star.
I've already got Bob's Knobs and will install when I'm feeling up to it. Am also looking at buying an artifical (Pico) star.
Am looking to make SCT collimation something of an obsession
Would definitely like a night of 7-8/10 seeing and a Lymax cooler