On my already-built RV-9A, I need to run the AOA and pitot tubing from the mid-fuselage entry back to the SV-ADAHRS-200 on the rear bulkhead, and the ADAHRS network cable from the back to the front panel. That's three 1/4 diameter items, and I'm out of space on the spar pass-thoughs in the center tunnel.

How are y'all running those items? In the tunnel or down the left side with the static tubing? What can I drill hole through safely to route those things? Routing suggestions?