RE: 1/5 scale Skymaster F-86 and a P-200
The first SM F86 Sabers had the same problem, too much weight forward of the CG, the take off roll was very long ,
I think a P200 is way too much motor for that plane the residual thrust would be an issue as well. I have a P160 for mine
Do you have the new tanks, that are mounted behind the rear former ?
Good Luck
Ted