Out past the 2 humps on each side of the riser it's basically flat, look at the unbraced picture Reply # 74.
I went threw this at the Tennessee classic with the guy's there.
this bow has no level, the first thing I did when I laid it on the tree was shim the riser to get the tips level and glued on a shim, I'm not tillering the riser I'm getting the limbs some what bending the same and watching the tips.
Remember, this is a stick
Trust me, It's the only way.
The ellipse is helping me alot.