Finding the satellite is a complicated process and not as simple as raising to the elevation shown on the DM and swinging the antenna around. You can blow right past the satellite before the meter has a chance to read anything. You can also get a strong signal from the wrong satellite. Be sure you have the receiver set to 18" round and then take your time. I suggest installing an in-line satellite signal receiver as they are instantaneous but the cheap ones still do not tell you if it's the right satellite. You have to wait and see if the receiver identifies it.
You need a good compass and you need to take the reading for the heading while outside and away from all that metal in the RV. Once you have the right heading, the satellite should be found within 20 degrees on either side of that heading and within 5 degrees higher or lower in elevation. You just have to work at it a bit at a time and very slowly. If you download and app like Augmented Reality's Dish Pointer you can see just about exactly where the satellites are but you still won't know exactly how the antenna is positioned as there is a 24 degree offset between the dish angle and the actual satellite elevation.
