I was scheduled for an upgrade to the HR-20 from the HR-10. The problem is with the 5LNB Slim-Line Dish. I currently live in a developement in a town-house. My 3 LNB has to be mounted at the highest point, which is the side of my chimney, to see the Birds in the sky. Currently I get no lower then a 95 signal on all my boxes so it has worked great there. It used to be mounted on the side of the house but I got reception problems due to surrounding trees. Well, Ironwood arrived to tell me he is not allowed to install the 5 LNB to chimneys due to their size and weight. He tells me the only other place to go with it and still see all the Birds would be directly on the roof. I sent him away, nicely I might add, because I wanted to check with you guys about mounting this way. He would drill 10 two and a half inch bolts directly into my shingles and fill them in with what I think he called "Bible Tape" I think? It looked like tar stuck to paper. He said this would be the stuff to seal the holes so the roof wouldn't leak. He also was looking for approval from my Association to go right into the roof which I didn't understand since I own the outside, this isn't a condo. What should be my concerns here folks. I pushed the install out until September 1st to give me plenty of time to talk with you guys and either ease my mind about this or cancel the whole deal and stick with my HR-10. Please help.