Thanks guys! Yeah, I have a Bahtinov mask though can't really see through my camera so well, so I usually use it with ther brightest star available while my dslr is connected to my laptop with live view. Will play with the tension, never realised I didn't need to lock it down all the way, haha, whoops.
My rig is: Orion ED80TCF on a heq5 mount, with orion guide scope on top, and usually canon 50d on the back. Also have a televue power mate 4x ... though this is even trickier to focus so usually only use it on the sun or moon.
Some people suggested getting a field flattener as some of my shots suggest I need it. Birthday in a few months so just working on my wish list ... haha.
Also, not sure I posted a link to my venus pics, again little out of focus, and shot through a fair bit of cloud:
http://sketchdigital.com.au/venus/
2x 50d: with 17-85mm f4-5.6, 100mm Macro USM, 50mm f1.8, 2x Sigma 30mm f1.4, 55-250mm (kit lens), Canon 100-400mm L, Tamron 200-400mm f5.6, Samyang 8mm. 480mm refactor with HEQ5. Home made beamsplitter stereo rig.