. It also has a bluff body at the back of the cylinders. I know this will offend the canard guys, but the aft end of a canard is bad...really bad

Yeah; and the bluff front end of a tractor is bad . . . really bad; plus you have all the turbulence from the prop wash making higher drag over the fuselage.  Take your pick.

Good summary of application of NACA scoop, BTW.

Al