Hi Martin,

> Interestingly, when I check the size of the original solid it comes out at 221 x 89.997 x 15. Is that
> normal, or could it be causing a problem further down the line?

It's normal - the top level size display is based on the bounding box of the display mesh, because it has to be calculated very quickly since it updates every time you change the selection.

If you click on that line and make the edit dropdown pop out, it will do a more accurate calculation at that time, and also the fields in the drop down show values to a higher number of decimal points than the top level display as well.

- Michael