If by "round enclosure part" you mean the tube enclosures, that's correct, it's not finished. I never saw the point in finishing it due to the overwhelming feedback of it being unnecessary. Also the cut sheets on the wedge shaped enclosures isn't finished for pretty much the same reason. It works great but it seems that all anyone was really interested in were standard rectangular enclosures.

And Thank you, you're right, it took quite a bit of work to get all the calculations to work out on it. There's still tweaking to be done, which is being completed in the newest version, but it is quite accurate which is the most important part.