At 0 degrees the LNBF is not skewed or tilted at all. If the calculatir gave you a positive value of 23 degrees, then you have to turn the LNBF counter clockwise 23 degrees. That is, you have to turn it to the left facing the LNBF and dish.
See the explanation here:
http://sadoun.com/Sat/Installation/S...Calculator.htm
You don't have to turn the LNBF manually to view Vertical or Horizontal channels. Make sure your LNBF power is ON. The receiver will send a votage signal that will switch the polarity on the LNBF according to the transponder polarity. Saves you a trip to the roof :shock: :lol: