Hi mate yes it was the arm position I was looking for Zenith and goto of course. I considered a Porta but expensive then need to add motors etc. The 65quad comes in around 3kgs and the mount rated just over 5 so I can add a finder if needed. Appareantly you can adjust the gears for heavier loads and some actually ride a C8 on them Prob only good for visual at that. I've seen some great shots with the Mak combo but this should suit my needs for quick setup and view. This link has some useful info..Chrz...
http://www.waloszek.de/astro_sw_star_disc_2_e.php