I've followed the steps to correct the Square and achieved the same result as you! I really appreciate your advice on approaching and solving the problem. I'm going to try with the Oval at a later date. I'm quickly learning that for smaller sized objects to design them on a much larger scale first and scale them own to meet the need. For whatever reason, I'm reading a lot of things about how sketchup doesn't deal with things on the small scale as effectively. Thanks cotty!

HUZZAH! Thank you so much. It took me about 20 minutes to figure out exactly how that plugin worked, but after some trial and error it worked flawlessly. Thank for the "reverse" function as well. I couldn't figure out why some surfaces were different colors, but now I know (and knowing is half the battle!). I plan on 3D print this little guy (38mm X 38mm X 6mm) to use as a board game piece. I've made some final adjustments and I think it's "ready" but can you please look over the integrity to make sure I'm not missing something critical? You time has been much appreciated! SUCCESS!