Truckracer,I didnt make myself clear. I get all Sats with good signals with out any elevation changes.so my polar axis is ok. I thought that maybe a very slight adjustment on the ant would change my Vert skew away from -90. After reading your reply I did some some checking and found that: On Sat W5 channel 421,the Vert skew is -90(with good signal) and channel 255 the horz skew is -20 with a good signal.(near same results on G5 and C3) Since the horz skew is normal,this tells me the ant is correct. Something else must be a little off that give me the -90 readings. Although I get good signals now I worry if in the future if things change the wrong way and I cant adjust the vert skew any higher,I will lose signal strength. (the signal weakens at -85 so it has to go higher) I have a standard C band set up. These readings are the same with my cheaper LNB or my new $150 one. Doesnt the -90 reading point to something being off. (although it has been like this for 3 years and working ok I would like to know why)