New hole in the motor, Cannonball stage 15
The little left handed screw that holds the timing gear onto the mainshaft backed out someplace in the Mohave desert. As it unthreaded, it went through the aluminum timing cover. I heard the gears rattle (sounded like rod knock) and I pulled over. No extra left handed 1/4-26 screws in the tool kit. But a fix was found, and I continued on across the desert toward the ocean.
The duct tape was used in an attempt to keep some of the oil in the motor. It lasted about 10 miles before it disintegrated.