Tonight's project was to assemble the mounting tray that will go inside the left wing for the ADAHRS sensor. This tray is made of several smaller pieces that must be match drilled, deburred, and riveted together. A few of the parts came joined together and also had to be cut apart on the band saw and edges sanded smooth. Some of the attachment holes needed to be match drilled through the J-channel stiffener for that wing also. I opted not to prime this part at all since it wasn't a significant structural component. I also spent a little time continuing to plan where I would be mounting the pitot tube. I think I've decided to just keep it in the same general location that Vans originally suggests, since there have been a few other online builders that seem to have put theirs in the same location without problems.