I ran the left wing electrical conduit through the holes I had drilled in the ribs early in wing construction. Started in the middle and pulled conduit to wing tip fairly easily. Working the conduit through the closely spaced ribs under the wing walk was more trouble, as you could only move the conduit a few inches at at time. Eventually had it done from root to tip.
Spent a lot of time studying the instructions that came with the Gretz kit and researching pitot tube locations. Decided on the outboard rib of the bay next to the aileron bellcrank. Made up the 3/4 inch angle bracket and drilled it to the rib.
