We have a Waeco refrigerator. After reading several posts, it seems to be a good idea to purchase and carry a recharging kit (to add R134A coolant). One post stated the hose & gauge combination device could be found at Great-Wave.com but when I contacted them they stated they no longer carry the combo just the hose. To avoid overcharging the unit, we'd like to find the hose and gauge. Any suggestions are greatly appreciated.