So I have a smaller Sistema container that I've been using for overflow. Calibrated the hygrometer, and put two 65% Bovedas in there. This was several months ago. Since then, the RH has been reading 75% for a while and I'm not sure why. Could the container not be sealing correctly? I confirmed that it isn't the hygrometer....I put it in my other Tupperdor and it read a nice even 65%. Is it the fact that I only have a few sticks in there? I wouldn't think so since the 65 Bovedas should be doing their job regardless. Any advice, y'all?