Standing behind the model and looking forward, which way is the firewall tilting? Left or right? If right, measure how many degrees to the right the firewall is canted. If less than 5 degrees to the right, it is just fine and was intended to offset the engine's tendency to make the model go left upon the application of power due to torque generated by the engine and P-Effect of the prop. The firewall should also tilt downward with less than 5 degrees of tilt from true vertical. These could be built in intentionally to help the pilot keep things sorted out during the initial flights.

Good luck.


Ed Cregger