Installed template for pitot controller in left wing and match drilled for #8 screws to rib adjacent to pitot. Made for tough drilling and deburring with very limited access to backside. Tried to install controller but it's going to be darn near impossible to get to hardware on back of rib. Even tried my washer tools to access the backside without success. Can't install controller on facing side of rib due to raised portion of rib around lightening holes. Bent AOA and pitot aluminum tubes to fit in wing and through pitot mast. May have to cut one short to get mating hardware to fit through the pitot mast. Applied another thin coat of epoxy and fairing filler to canopy fairing.