>As I understand it ypu can stagger deep and medium frame in a deep body so that the colony can increase drone production for queen rearing purposes. Is this true or will this make a mess with criscrossed burr conb?
You can just put an empty frame between two drawn ones and get a lot of drones as well, but yes it works most all the time. Once in a while they will crosscomb when you do this, but usually they just continue the comb on down, ESPECIALLY if the combs on each side are drawn and full of brood. It's more iffy if you do this between frames of foundation.