My blender is smoking on the "inside" of the glass container and the base of the blade seems to be extra hot. My protein shake had a burnt taste about it. The blender doesn't seem to be struggling at all and was not a thick drink I made. Plus was small - about 8 oz. Do I need a new part? Is the problem with the blade piece, or is it a result of the base motor. That does not seem to be hot or smoking at all. Just inside the jar, which to me seems very odd.