Hi Geoff,
Bad luck on last night

Maybe next week
When i built my 8" Newt, I used a Astrosystems 39mm secondary. I brought from from Roger Davis, at
http://www.batsc.com.au/
Also Bintel sell Novak gear which are very good.
If it was me I would go the Astrosystems way nothing but great reports on there stuff. Vist them at
http://www.astrosystems.biz/
Hope this helps.
I'll be observing at home tonight