Opened up all holes on seat back to A5. Ran into a problem on the flap actuator mount so I ordered a new one. Drilled the vertical L's on fwd skin and gusset. Started deburring and zinc chromating parts I work on and will start riveting what I can. Don't want to rivet tyhe fwd skins till I get in plumbing and electrical. I will use disconnects for all electrical and pitot/statc at fuselage/wing meeting. also will use tubing for fuel in the cabin with a disconnect at wing root. Brakes will be hose from brake cylinders to parking brake valve then tubing from parking brake to outside middle channel to gear, then flex hose to brakes.