Had a Dish(Dish network) setup with two separate dishes, one for 72 other for 61.5 with legacy LNBs and a single sw21 switch and a VIP 211K receiver. Thought it would be easy to change to a Bell setup with a 6131 or 4100 receiver. Can't seem to get a signal from either sat. The setup with dish worked until the switchover so can't see why reaiming the dishes shouldn't work. Do I need new style lnbs to work with the bell receivers?