Thnakns Paul
I screwwd up bigtime on the pipe....... It said 30mm from the tailcone to the inlet duct on the pipe in Wren`s drawing. What I failed to see, was that is for the 2 piece tailcone. The single piece cone only has to be 10mm from the inlet....... so my pipe is 20mm short ....dang..
But I dont think it will be a problem.......now I just have a huge venturi effect in the fuselage.....better cooling

What do you guys think ?