The Art of Nodes

I have this really cool sofa node I want to share...but there is a slight problem.

Notice the gray area of the sofa, it's just a small box...right.

However, if I apply the same surface to that little box, the render time jumps from 30 minutes to over 24 hours.

Anyway, enjoy the images until I work out if it's my error or a bug within Lightwave...ha..ha