I have 2 HF-5V Butternut verticals. I am going to convert them 80/40 only. Do I need to add the extra length to the antenna like the HF-2V? If I were to phase them, how would I do that to work on 80 and 40 without using a relay box? Can it be done with just coax phasing runs? Thanks, Kirk Mohror K7EKM