Started the task of figuring out how much I was going to have to cut out of the bulkhead to make room for the Garmin avionic. First I assembled the trays onto the instrument panel. Then I could make some measurements, layout cut lines and cut the holes. After cutting the holes I smoothed all of the edges. Might have to make some more cuts but I did not want to donate any more blood than necessary. Tomorrow I will test fit the instrument panel.