Putting this evaporator together i just bought and i cannot find any information on why CDL put a second hole in the front of the float box and about 2 inches below the sap intake. The sap inlet hole (At the back of the box) has the bigger pipe welded on it for the reverse flow pipe, the second hole does not. Since is a reverse flow machine so it doesn't make sense that this is in it, seems like it would defeat the purpose?? For some reason it isnt letting me upload pictures...