So we have a Webasto heater that makes a pretty loud click during operation. Apparently Espar's do it as well. It's professionally mounted using the factory hard rubber bracket that came with it, and has solid copper tubing connected to it. Has anyone figured out an easy way to quiet these down? I've seen on the trucker forums where they are mounting them on the other side of the truck etc. Some folks built a box to house it. Others suggested cutting the copper lines and splicing rubber tubing in to reduce the vibration/noise. Any thoughts or suggestions.