Below are some pics. Pardon the mess, it's still very much a work in progress. I was able to find something to fill the gaps between the panels and the extrusions. It is a felt tape which was not cheap, but should be enough for this whole project and then some. However due to the thickness I was only able to apply it to one side and the bottom.
I'm also re-working the door design and may re-print one to check it out. Still a lot to do on this and I would like to figure out a better filament storage setup (really anything is better than what I have now).