Removed heat muff, exhaust support brackets and all four exhaust pipes. Safety wired clamp on #4 intake port for oil hose. Drilled all 4 exhaust EGT temperature probe locations at 2 inches from edge of flanges. Had to remove outboard #4 exhaust stud due to not enough threads. Damaged during removal. Installed #1 and #3 exhaust pipes. Installed #1 and #3 EGT probes. Cleaned and painted exhaust supports with high temperature paint. Removed and painted throttle bracket.
