Purchased and installed a new 90 cm (36"0) fortec dish with a saab hh90 and a invacom qph31 lnb. Set asimuth to 186, dish elevationto 40.1, motor elevation to 26.1. Can get no signal. Tried 2 Lnbs with signal meter and with a fortec classic reciever. Adjusted on the fly . Most I get on any...