OK. I am trying a modification on an old Melitta Quick Brew that I have. It is 1400 Watts, but the problem was (from what I understood) the way the water tub goes straight down through the device (or actually it is nearly straight down; something like that. In any case, there is a clear plastic tube in the water filler tank and two tubes under the coffee maker that circle around the hot plate. I assume that the cold water goes down a hole in the filler tank into the clear plastic tubes underneath the hot plate for heating and up the plastic tube that goes through the filler tank, which leads to the coffee basket. So, do I insulate all of these plastic tubes or just the one going up through the filler tank. And since that tub is in contact with the water that I will be drinking, what do I use for the insulation that is healthy? Just another layer of rubber tubing? It might be loose and catch some water inside between the original tubing and the insulating one. What insulation do you use?