ORIGINAL: skydell
An additional issue was that the upper fuselage was heating up severely during taxiing in. I have a Jetcat P-80 SE with stock pipe, 3/4'' between end of engine tail cone and front of pipe bellmouth. I cut the cheater holes in the bottom fuselage, between the strakes, as suggested by prior posts, and they helped only slightly. Then I mounted a 0.016'' thick aluminum plate covering 1/2 the diameter of the inside of the upper fuselage as a heat shield, and that cured the problem.
Another solution is to use a half of bypass section (if you have access to one) see my post #331, my buddy was having the same issue and I gave him a half of bypass section from a Comp ARF Flash...problem solved
