Section 18 - Fuel Tank (left tank attach; right tank near-completion); Section 19 - Wing Systems Routing (Gretz mount for pitot/AOA); Section 20 - Bottom Wing Skins (finished gap fairings; started ADAHRS bracket)

I worked on 3 different sections in the wing kit this week, and got a lot accomplished:  Fuel tank, wing systems routing, and bottom wing skins.  Specifically, I did the following:  riveted j-stiffener and attach bracket; Prosealed (4th cartridge) inboard aft rib and bulkhead union and nut, encapsulated shop heads of rivets in j-channel and attach bracket; finished attaching left fuel tank (screws and final-torqued bolts and applied torque seal); worked on Gretz mount for Garmin AOA/Pitot - planned, cut, drilled, deburred.  Fabricated L-bracket (Gretz mount), drilled, deburred, and it is ready for priming and installation on rib; riveted inboard aft rib to skin, attach bracket, and inboard forward rib; installed and tightened fuel vent line; installed fuel float; Prosealed (5th cartridge) fuel level sender, checked continuity; prosealed & clecoed baffle and z-brackets to tank; wet-installed pop-rivets; finished and installed flap gap and aileron gap fairings to top skin and rear spar; and, match-drilled ADAHRS mounting plate to lower j-stiffener - short.

Riveted attach bracket to right skin:

Ready for prosealing the inboard aft rib:

another view:

Riveted j-stiffener:

Prosealed inboard aft rib:

Encapsulated shop heads with proseal:

Re-drilled 4 of the holes to accommodate larger (1/2" SB500-6) snap bushings - this is needed to route the AOA (or pitot) tubing:

Finished screwing the left fuel tank onto the left wing assembly (shown here upside down - screws attached underneath):

Another view from underneath:

Final-torqued all fuel tank attach bolts, and applied torque seal:

Started Gretz mount for the GAP-26 Garmin heated/unregulated Pitot/AOA - had to fabricate this bracket from a scrap sheet of aluminum:

Parts for the Gretz mount, in the midst of fabrication (drilled primary holes, but still need to dimple, match drill to skin, etc.):

Temporary mounting of Gretz mounting plate:

Attached and final-torqued vent line (right tank):

Other end of vent line:

Riveted aft inboard rib:

Bent float wire, and ready to install fuel level sender:

Prosealed fuel level sender and baffle to right fuel tank:

Another view:

Third view - note that I added a crapload of proseal to ensure no leaks:

Ah the Garmin GAP-26.  I learned the hard way that it comes with absolutely nothing to install it.  I knew I needed the Gretz mount and 14ga wire for the heater.  I did NOT know I needed to buy 1/4" red/blue plastic tubing, and the connectors to convert the 3/16" aluminum tubes on the GAP-26 to the 1/4" plastic tubing.  Nor that I needed to get Faston plugs to have a quick disconnect near the access panel. So, I ordered all that stuff via two orders (SteinAir - one via phone, since I needed their help; and another via their webstore).  THEN I tried to find the 4 screws that would mount the GAP-26 to the Gretz mount.  Nope, not in any box/kit.  Turns out, I had to buy screws with nylon locking patches ... so I have 50 screws bought from McMaster-Carr, but only need 4.  Anyone else need these?  I will have plenty to share once the order arrives.

Clecoed the flap gap and aileron gap fairings to the left wing:

Another view:

Finished riveting the gap fairings:

Another view:

Match-drilled the ADAHRS mounting bracket to lower j-stiffener - short: