If you've got freebase in DCM (ie from an A/B) don't bother drying the DCM before distillation--just go straight ahead. Water is more soluble in DCM at higher temperatures, all the water is carried over.
One cautionary note of extreme importance: if you've got two immiscible phases you MUST separate them!!! Eg if you've got "wet" sassafras, freebase or whatever, you MUST dry them or add some dry DCM, alcohol, etc, to carry over the water... otherwise it will splatter the oil as it distills!