Hi i have played 3 games on the Fridge map and every time i get my economy going and start building a small army the game goes crazy like all of my metal just starts going to zero super quick. and i have even tried to stop all my production queues but its still always negative metal. as for radioactive its fine. maybe u could add more metal deposits. The only way around this is to upgrade the deposits but by the time i do that the enemy sends it huge armies and i have nothing to defend with.
BTW for all the games i was playing PHC. I know its a tiny map but with the victory points being like 2000 the game just always ends being a race to who builds more aircraft's and bombs each other quicker. 

Sorry for the long post but other than this map i have enjoyed all the 4 hours of game play so far. 

Good Job