Grabbed myself the ED72 just today from Astroanarchy and set it up on the star adventurer. The RA balances nicely with just the standard counterweight all the way down so no need to an additional counterweight which is nice. I'm just worried about DEC balance but i dont think it'll be too much of an issue as it doesnt track in DEC. Although I'm looking to get a vixen dovetail mount anyways just to move it further back. The ZWO 30mm guidecamera will come in handy