After reading more info on ADSB antennas out of the Dynon installation manual it looks like you should not use a round ground plane for the antenna. I had read and seen other places that people were using round and that is what I initially installed. Not wanting to take any chance of them being wrong I removed the round one and made a square shaped antenna plane. It was easy to remove the old one since I had only tacked it into place. I made the new ones and Alodined them before Hysoling them into place. I also worked a little more on the instrument panel. I cut and drilled the support brackets that go behind the panel.