Locate the S-6028 Doubler Ring on the S-602-1 Spinner Back Plate using bolts through the four holes in both parts. Match-Drill #30 all of the 1/8" holes of the doubler ring into the spinner back plate and cleco.
Trace the inside perimeter of the S-6028 Doubler Ring onto the S-602-1 Spinner Back Plate. Remove the doubler ring, then cut along the trace to remove the hatched area from the spinner back plate.
Deburr the holes and edges of bath parts.
Today was the first snow here. Mostly flurries all day. Much to my surprize when I found snow accumalating on the inside of the hangar door.