I have a total of 16 hives and I have 3 or 4 that are not producing well. I have a queen in each but she is only laying on two or three frames while the rest of my hives are full in the brood box. I am thinking of re queening the weak hives. I run single deeps as my brood boxes. The weak hives also seem not to be putting up a lot of stores. Should I re queen the weak hives or hope they begin to build up? Thanks everyone.