Hey Hogdgz, have you looked at the "Traditional Only" shafts that 3-Rivers sells?
These are a wood grain carbon made by Easton for 3-Rivers. They are supposed to be the same 5/16th diameter as the Gold Tips you are currently shooting. These shafts are available in the 340 spine.
I'm shooting a BW, MA-II, 49@29" and I have about a 31.5" draw. I'm currently shooting full length Gold Tip Traditionals, 55/75 with the standard insert and a 125 grain tip. I also have a 22 grain reflective wrap and use three 5" LW shield cut feathers.
I have been thinking about trying some of the "Traditional Only" shafts for my bow.