Rick, we have a great supplier of small dia. carbon shafts in solid and tube. I can get anything from .180 all the way up to .315. Those are really stiff, I have some .265 that are spining close to the standard .254, or the old AFC 2540. Spines for each dia: .240-300 deflection and 10.6gpi, .254-265 deflection and 11.9gpi, .265-215 deflection and 11.8gpi, .315-135 deflection and 13.0gpi. The solid .240 shafts I sent you spine at 260 deflection and 17.1gpi. Spines were measured on 26in. centers. Overall shaft weight takes alot of the spine out of the arrow when you actually shoot it. Let me know if you are interested in something specific. Mark