Hey guys I need a little help. I have been taking my box out of the spare bed room and putting it in my RV on the living room TV and it works great. The problem here is when I added a second box on the outside of the RV to watch a ball game or race the box on the inside shuts down. At the house I'm using a 5lnb swim with Box model D12-100, In the RV I'm using a 3lnb 18x20 slimline with Box D12-100. Only using one RG6 cable on each. What do I need to do to make multiple box's work in my RV?