Water Maker issues - faulty boost pump, pump rebuild and reconfigure to improve system performance

The boost pump wont self prime so the previous owner set up a system to use fresh water to prime the pump and then switch to sea water flow. I wanted to reconfigure the set up to allow a much simpler and tidier set up but found the boost pump to leaked so needed a rebuild. I reduced a number of hose runs, took out some 90 degree bends moved the pressure gauge from engine compartment to control panel.