Completed alignment of ADAHRS/ELT tray and installed battery box. Used UHMW anti-chafe tape under the tube clamps. Also used white heat-shrink tubing to insulate the battery retainer bar, in case it rolls free and shorts the battery! I also added washers under the cotter pins to prevent galling of the battery box. I do this in many places where a free-range cotter pin is used. It can also help tighten up a connection so it doesn't vibrate.