Laid out the cut out for my Dynon EMS 120 on the left side and above the radio hole. I then cut the opening with the dremel using a steel ruler clamped on the line to prevent crossing over. Once cut out, A series of fileing and then sanding to final deminsions. The mount has a flange tab that runs the length of each side and the manufacture says its ok to remove two sides if necessary. So, I removed the right side flange since it would interfere with the angle for the GPS.
I also made new angles for the radio trey below that were a little bit longer than the previous ones.
