If what you want is the FTA channels from DN (which are very few) and other FTA channels either
HD or regular digital. Dump the DN dish/dishes and lnbf's. Purchase a 90cm dish with a
QPH-031 lnbf,
DiSEqC switch and a
SG2100 motor. Setup the motorized dish and lnbf. You now should be able to see all FTA channels available to a standard linear lnbf in the arc along with all FTA circular channels.