sent you a p.m..
some general stuff about the arrows i use. most are split bamboo, hand crafted by alan case, usually 4 piece with taper in the body of the shaft.
i also experiment with heavy bows and short draws. this does not work on most bows because the draw curve is not beneficial to that scheme.
my venom bows gain evenly from the first movement of the string to 30" and they work well doing that.
for the modern chinese bow the arrows will be either carbon or bamboo.
longbow arrows must be wood or bamboo only , and i have shot wood with success also.
the balance of the arrow is just even or slightly towards the point. about 1/8" towards the point from physical center is as far as i go. prefer dead center or just barely past that point. thats contrary to what some people believe as far as cast goes but i have shot thousands of flight arrows and found what works for me. if you get behind the center, towards the nock, and the arrow is not stiff anough, it will turn about 40 yards out an come back like a boomerang or break.
i will try to take a picture of one of the bamboo arrows and post it.