sorry to hijack this thread (just a little)

We're a rookie team and wanted to know if we were restricted to using the 8" standard wheels or could we use 4"/6" wheels with traction tread from Andymark? We are thinking that lowering the height by 4" would allow us to get through the tunnel easier plus would lower our C.G; but, may pose a problem getting "over the hump". Has anyone else tried this or considered it?
Thanks!
Steve Miller
Summit International Prep
Team 3355
Arlington, Texas