I found the trig method a bit hard because it is hard to measure that accurately with a ruler or a tape. I leveled the aircraft with a level on the canopy base which seems to run exactly straight with the fues. I could then easily see with a small level on the backside of the motor (horizontally mounted) that I had a slight amount of down thrust. The funny is that it appears that the firewall also has some down thrust built into it. This may be intended or may be a flaw. Using the line I established the tail also had a slight amount of negative incidence which I found to be surprising.

So, I need to take my measurements again leveling off of the cord line. However, I don't have any tool to determine what the cord line is.