i have a 30inch fta dish with a invacom lnb two linar and two circular outlets i live in the usa florida and this will be a moterized dish my question is on the lnb hook up do i need a disque switch to hook up one side on the linear and the circular ??? like where should i hook up the circular on lnb 1 and the linear on lmb 2 ?? and where sould i point the dish on tru south need help thanks.