Jesse, I've just made a bazillion of these bows, and what I have learned I try to pass on here. For how long you, and some of these guys here have been building bows what you make is flat amazing..The skinny bows are just more "different" and challenging kind of like using Ipe the first few times. To me this is the fun part.
The bow I mention here is just perry reflexed, but I have made several this past year which were center-shot r/d with a built-
up style handle sections. Part of it is making sure the grain runs straight down the belly, part of it is making sure no limb cross section is close to square, and also make sure you have a good taper both ways, as any straight sections tend to curve.
I find out if its straight during floor tillering since if it starts to twist now the limbs aren't bending straight, and then I go from there. Also the bamboo is thinner than on the wider bows and great care is taken to make sure its symmetrical.
I have made a few which had to get shortened, the tips tapered to one side and then used side nocks for the string. Some of these ended up working great after all the tinkering. My latest experimental bow bow does this a bit still, but I don't care since it feels like its cast is going to be real good.
Rich-