I noticed that also, I think that may be a significant part of the difference right there.Also if you notice he is holding the pointer way too close to the LPM sensor giving an artificially high output reading in his zeal for higher output.
Big differences in LPM quality and function wise. as well.Well the sensor surface is recessed on mine, so I'll place it as close as I can, with the head in the opening...
Didnt make a difference.
Not sure it's even brassIt's built with a brass axiz 12mm module??