A friend fixed his limb like this, he said he carefully drilled a small hole on each end on the spot just thru the 040 glass and injected warm superglue into spot until it came out of hole on opposite side,wipe excess glue torwards limb edge, let dry hole side up, do not blow on super glue it will turn a whiteish color from moisture in breath, if your carefull you may not have to refinish the whole bow.. good luck, I hope someone with actual repair experiance chimes in