without the rest:
so as everything was pointing in a straight line to South (according to the compass
did you accoiunt for the magnetic adjustment required?
You have to add about 5 degrees to your compass south to get the number to point the motor at when at "reference" position.
That one is important to get right.
Look at the chart mid way down the page here:
http://www.sadoun.com/Sat/Installati...Calculator.htm