Try looking at the firewall very carefully, the offset should be built in. You can add to the offset by removing the left (facing the front, as if you were the pilot) screw that holds the motor mount, loosening the top and bottom screws a few turns, and inserting a small washer between the motor mount and the firewall while reinstalling the left screw. 2 degrees is difficult to measure, for sure. I would look carefully at the firewall first, measure very carefully the difference between the left and right side of the firewall back to the nearest former, or the most convienient vertical point that you can measure to. I believe you will find the offset to be about 1/16 in. PS.. I like Jaka's response, and the convienience of measuring from the prop to the wing. I love this place.....