It would take a lot of width reduction to drop 10 lbs. Probably was just light to begin with.
I clean up my limbs to a parallel thickness and leave them slightly wide to begin with. Also my limb buts have a small amount of sacrificial material that make the glass slippage a non issue.
After cleaning them up and drilling them, I cable the limbs to give dynamic center... saves a ton of effort later on.
But then, I'm just building bows for the fun of it... all this other crap I do is to pay the bills
BigJim