skew on the menu is not needed with KU only....you can leave it at 45 or -45 
You only need to skew the LNb outside if its a fixed dish. Motorized, you point it straight up and down and the motor skews it for you as you move along to each satellite

You only need to skew the LNb outside if its a fixed dish. Motorized, you point it straight up and down and the motor skews it for you as you move along to each satellite