So a family member has a new chocolate fountain and we thought we'd try it out. It was not pretty. Chocolate was gloppy and thick, even with the addition of oil (as directed in the manual) to thin it out. Does anyone have some tips for us for future use? I'm assuming we'll need to turn on the heat much earlier? And any recommendations about how to get the chocolate smooth and thin so it cascades down each level nicely? Are there better ways to achieve this without the use of so much oil?