jus sharing...
Observation:
1. wet beam, ,<-may be evaporation when the cabinet door is fully closed without any ventilation or jus splashes of water
2. wet pillar <- all the pillar or jus one particular pillar??
3. small amount of water at the side of the tank <- try to wipe it if still wet might be sign of leak...
my experience is not to close the cabinet door fully .. the inside would be abit damn if closed fully...
now mine is not closed fully .. so far been good.. all dry jus abit of splashes here and there by the over flow water..
cheers..