The one thing I would say Randy is if ever I need to turn something a little bigger than 5mm in my Wolf Jahn I turn a piece of the material down to 5mm on my vario-lux lathe so I can then fit it into a 5mm collet on the Wolf Jahn. I just recently made a new ball top to hold the handle for a carriage clock, turning this sort of stuff I find much easier with a hand graver and because the base was 6mm I just turned a section of the 6mm brass rod down to 5mm first. There are always ways around problems, its just coming up with the solution that can be taxing 
So what did my experience do for you? Will you be buying it?
Paul.
