NChrome....I have done quite abit of "testing" with different thrust angles on several warbirds......What I found out was it was of little value for the work needed to dial in right/down thrust...........provided the throttle isn't "slammed" on the T/O roll or during go arounds......if you have good throttle management skills I would forget the offset and go 0/0.......Offset does make a difference on the vertical line or for the Aerobatic guys where they do a different kind of flying..........for us warbird guys when even going on the vertical adding rt rudder will keep it there....Good Luck.........Bill....