when you're setting the "radius" of a torus, is there some sort of formula to get the ring to be the width you want? I've tried dividing the desired ring width by the total diameter of the torus and multiplying by 1000 and I can get an approximation, but it isn't really accurate and I have to fiddle with it to get it exact. I've also noticed that the difference between my approximation and the actual number increases with the size of the torus, so I'm wondering if perhaps it's supposed to work that way but it is set to do it at a really small width, rounds, and then multiplies so the rounding becomes more obvious when you enlarge it? If so, would Corel please create a patch for that? It's annoying.