Hi, I own a Noble Vapor VP110, a standard convection vaporizer. There's no display for temperature, so I just turn the knob to adjust it. When the vape was new I never had to turn up the temperature to maximum. Today I feel it just doesn't get hot enough if not set to full power. I believe it used to get hot faster or obtained a higher final temperature. This obviously affects vaporization results. I still get vapor, but seemingly not as thick and not as fast as before. I decided to measure how hot the tip of the heating stem gets after 15 minutes on full power. The result was 158 C / 316 F. Does this sound low to you? I would think that this is not the same as the actual vaporizing temperature, because it's measured from the surface of the element but not from the air that travels through the vaporized material. Could the air flowing through the material be hotter than the element? I'd like to hear your thoughts on the subject, and even more interesting would be some comparable results.