Installed Pitot Tube mast and drilled for mounting and Garmin GAP 26 heated AOA pitot tube set-up. Install went well. I used the pitot tube mast from Avery P/N SA-06BL. I purchased the Glasair Pitot Kit which included the newer backing plate. The instructions are not correct and cause more confusion with pictures of old revisions and are not clear. I confirmed with Glasair to use the 'green' primed backing plate and ignore the step for fabricating your own backing plate. The rest of the parts will be used when I get ready to close up the wing and the static ports, that are part of the entire pitot air system.