I am putting together my first FTA system and need some help picking a LNB and motor for it. I have a Andrew 1.2 meter offset fiberglass dish and Pansat 3500SD. The dish came with a Andrew Ku feed horn assy. What types of LNB's can mount to the feed horn? And how to switch between them? I have also noticed other LNBF's BSC621 or BSC621-2 and the Invacom QPH-031. Not sure which one if any would work best for my application? I'll take whatever band's I can get Ku linear / circular , C. I also need help picking a motor. The dish is mounted to a 2-7/8" pole via a az/el cap mount. How do I attach a motor to the dish and mount?