I purchased the motor on ebay.uk but I'm not sure if they are still for sale. It moves the dish flawlessly but is a bit noisy. This is the motor I'm using:
Still noisy but working relatively spot on. I do have to nudge the dish once in a while so I'm not sure if it's the motor or my vbox positioner. Moves the dish flawlessly and I could see it being strong enough to move a 1.8m as well.