I am about to setup my BUD for the first time and I am concerned on how to adjust the actuator arm. The actuator in question is a Superjack + HQ though I don't know if it is an 18 or 24 inch length but it came with a 7.5ft. unimesh. My question is how do I know where to set the arm all the way out or all the way in or middle when you start to setup the dish limits in the Gbox or any receiver for that matter. I currently have it manually screwed all the way out which should be my east limit.