Mounted the brake doubler F-601TD and drilled holes. The stainless drilled ok, just run an electric drill instead of the air drill. The speed needs to be so much slower the air drill just won't turn that slow. Mounted the fuel pump doubler. Again had to drill the holes in the firewall. I worked slow today besause I didn't want to screw up anywhere along the way. Finally match drilled all the holes. Disassemble everything and debur the holes. Cleaned up the edges of the angles and countersink the proper holes.
