There's already between 2.5 and 3 degrees of right thrust built into the firewall. I have not noted any up or down thrust. It does not need any. The only time there's any pitch change with power change is when the C/G is much too aft. That will be aft of a 5-1/2 to 5-3/4" C/G. Use the same size standoffs at all the engine mounting locations to avoid changing thrust angles. I think there's already something in the instruction book that covers this.