Player AC flies poorly

[jldjs]

I just DL'd the Dogfight pack V1.0.  Anyone explain why the player AC, either the P-47N or if I substitute a P-51D , flies so poorly?  By that I mean, poor turning, very little elevator control.  Is it the altitude selected in the escort B-29  mission (28000 ft)?  
I haven't been able to get Bruno D's P-51D and wonder if that AC would be better.

[Bombardier101]

If you go to Settings, then Realism Settings, see what the flight model realism is on; when I put it on Hard and flew a P-40 Tomahawk the thing span like cr:Dp when I turned hard (good for making Zeros over Burma miss me while they're on my tail! lol!)  ;D

Or might need a new aircraft or stop flying at U-2 spyplane altitude (82,000 feet LOL!).  :D