Holy smoley! I'd cut them down the middle and make 2 60# bows. I can only imagine working up to 120 lbs ending with me having shoulder surgery.
Depends on the limb shapes. Generally recurve limbs are thin relative to their width, I can't see trapping removing that much weight. You'd also need to reduce the width a bit. But of course I'm not sure I'd do either until I understood the limb design a bit more or you'll start to affect the stability of the limbs and probably the overall shootability.
But then again, if they aren't costing you a fortune it may be worth playing with a bit. And in that case, what do you have to lose? Except possibly some limbs you can't shoot anyway?