VickeB66,
Simply run new lines made from Pex. Then there will be no leaks--and you can route the lines inside the heated area of the RV.
The lines can be "fished" past obstructions.
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.