i have a bs1d1up201m eoo lnbf with a dish 500. pansat 2700. i can set echo7 for standard/1/twin lnb 1 and it works on the correct half of the lnb. when i set echo8.1 for stamdard/2/twin lnb2 it just repeates the echo7 channels.
Legacy Twin LNB and Pansats don't mix..it has a built in SW switch that is not user friendly with Pansats and most FTA receivers..U will always have switching problems...Dish Pro Twins are FTA friendly!