-Cut out a 2 3/8" circle from 3/4 plywood per the instructions to use as a way to aligh the snorkel with the intake. The wood is taped to the fuel injection servo. Then I trial fitted the snorkel - no dice with my B/C starter. I started cutting a hole and had to make it progressively bigger. More trimming to do yet.
The rounded hole is new and will get bigger before it's over...