Posted 4/23/2014 21:59 (#3832960 - in reply to #3831001) Subject: RE: Raven NH3 Rate Off
NW Kosciusko County
I was wondering the same things. Been under applying also. I think it is possible to be partially blocked. And i think you would raise the cal number. Think I am going to raise mine and see what happens. Are your vapor tubes getting frosty?