Made the discover that on the Pilot Side the 'rear door tube' I had placed the elbow too high. Poor access once covered and panels in place. Ideal location is 3" below the "seam" where the door sill meets the horizontal.
Another good discover, with standard AN aluminum "T" fitting.... measure and cut tube 9/8" (yes, 1.125") back from Center Line of insecting tubes.
Photo shows my "centering tool". 1.125" diameter stock, with a 3/8" hole. Nice "dead center" location tool, also handy measuring device (note above). If you use a 1" punch hole grommet, quick way to make sure you have room for such a large hole.
