The pump fell apart on me and I would like to buy some replacement ones. Does anyone know where a pump can be purchased?Machine works just fine. Pull the tub out and put some water in the bottom so it warms up and can heat the cheese or whatever product you put in there. Only need about 3/4 cup of water, if the tub floats, you have too much water in it. If you don't put water under the tub, it won't work properly