A few years back I installed a unique 24v system on a property due to distance issues. It has been working very well except now the cust wants some lighting down his 400' driveway. I want to use led's which operate between 10 & 17 volts. I have a spare branch off a hub to the furthest point we have lit which I connected it to thinking the voltage drop matpy take care of it but it doesn't...only goes down to 21v. Anyone have an idea how I can bring it down?