New owner here. Just bought a Hot Springs Aria and the cover it came with doesn't fit tight. Do I need to fasten it down when not in use? Tighten up the straps? I can't detect any heat leaking out, but when I press down on the front of the cover (by the control panel) it "gives" just a bit. Is this normal? I can imagine I would detect heat escaping if there was snow on it, but no snow so far.
Thanks, in advance.