i rescued 2 BPs awhile back and they have never been very good feeders. they will go weeks with out eating, and once went about 7 months. the female misses every time she strikes until i put the feeder right to her almost like shes blind, not sure what that means. most times she wont eat just kills it, strikes it, kills it, checks it out and leaves it. when she wants to eat it she will have a hard time finding the head to even start. the male strikes at in defense mode most time but when he wants it he takes it just fine. now they aren't skinny but are on the thin side and i want to get some weight on them. any suggestions on what i should do?