Are you sure you have the woodies weight measured correctly? Without the point, they would weigh about 290 grains. Subtract 25 grains for feathers nock and finish and that's about 265 grains. I've never had 11/32 cedar that weighed so little, though it's possible with 5/16 shafts. Most bare shaft 11/32s should come in from 350 to 400 grains for a 28-inch BOP length. I'm thinking you lost about 100 grains per shaft somewhere. 500 grains, plus or minus a little was and is a very common weight for an 11/32 , 28-inch arrow.