A P40 has split flaps which add to much drag to be useful for take off. A Cesna 182 has fowler flaps which do not start adding alot of drag untill you go over 20 degrees. I would leave the engine thrust angles at the Top flights specs for now and play with them after you have got the plane in the air and sorted it out. There is no majic bullit when it comes to these warbirds. I would suggest that if you are not comfortable flying airplanes which require alot of rudder on take off, that you fly something else for a while. These Top Flite P40's will eat your lunch if your not a good pilot. This is not a Hanger nine P40 by any stretch of the imagination. My Top Flite Bearcat usually takes full right rudder on take off and even then it may not be enough in a cross wind. My Old top Flite P39 was the same way. You really begin to understand what that rudder stick is for when your doing the dance on roll out after landing. By the way nobody takes a plane off, real or model at full flaps.