That hinge will likely kill the bow if it's not addressed soon. If you have a 6 ft string that should have a breaking strength of 200lbs, but it is thin in one little spot, and that spot would break around 100lbs, then you have a 6ft string that will break at 100lbs. Same with your bow limbs. A 40lbs hinge on a 50lbs limb is a 40lbs limb. Or a broken limb (ruined at least) if pulled much beyond that. Fixable.