Decided to try a different method to lower the ADAHRS unit using standoffs from fuel line tubing. Installed two to check for fit and decided this was the way to go. Sorta frustrating that. Spent two afternoons working on the other method, but feel this is better and WAY simpler. Now just need some ss or brass hardware to finish. Routed the SV cable and secured it to the F707 bulkhead. Drilled a hole in a firewall stiffener and installed an Adel clamp for the corrugated tubing. Secured a few more wires, coax,Elt and pitot tubes in aft fuselage. You can see where one of the cable tie downs failed to hold. It was the last of the clik bond glue I was trying to use up, so I'm not surprised. Still gonna need to ensure that the others are secure before flight. Decided to install nutplates on the subpanel for the Comm, Xpndr and ADS units. Drilled, deburred and dimpled subpanel for nut plates. Separated backer plates for two antennae deburred, and prepped for primer.