All this talk about bearing and float tests are confusing me. I understand how they are done any why, but I don't understand why it's such a big hassle to tune them. In Easton's catalog the state that "Easton arrows deliver uniform spine between all arrow shafts of the same size, and 360 degrees around each shaft". So I would have to assume that the bearing test woudn't reveal the weakest part of the spine on a carbon (or carbon/metal) shaft because it's supossed to be gauranteed uniform. Why all the extra work when you can shoot an aluminum? I tested the spines on Easton shafts years ago, and found them to be consistent.
Seems like I look for a reason to switch to carbons every year, but can't see how they are better than the aluminums. Sombody please tell me what I am missing........ I shoot SuperSlam Selects and X7 Cobalts now (2413), but I don't like the "fatness" of the shaft. What advantages can I expect from carbon shafts?

-NH