Spent the morning cutting down the angles for the Garmin stack chasses and drilled the rivet holes through the front panel and angles. Added shim for the SL-30 chassis to make up for the .060 difference in width between it and the other chasses. Reworked the panel hole a little to make sure there was good clearance for the chasses to be removed. Finally, I cut the hole for the GPSMAP-696. The corners of this hole were rounded to conform to the panel. The mounting for this will be worked out later.