I'm ready to make the upgrade to HD. Since I currently have the 18" round dish, I'm going to need to replace it with a Slimline. Though I don't intend to do the installation myself, I want to know my options before I have an installer come out so I can be prepared. The attached picture shows my current 18" dish mount/setup. The mount and mast are from my old Dish 500 from my Dish Network days. When I switched to DIRECTV, the reflector and LNB were replaced but not the mount and mast. Will I be able to do this again with the Slimline (reuse the mount and mast) or does the Slimline require a different sized mast? If I need to replace the mount and mast, will I be still be able to have it mounted to the fascia like the current dish or will some other setup be required? If the fascia mount won't work, what options do I have? I really do not like the idea of roof penetration, so would like to try to avoid installing it on the roof if at all possible. Thanks in advance for the suggestions!