I recently purchased a double gauge regulator. soon after i realized having two kegs i wanted to do dual regulators. I called my LHBS where I got the single and asked if i could return it...well the guy I spoke with said that I didnt need to return it, I could just attach a single regulator in the middle to make a dual. so....it got here today and i did so. everything is tight. when i hook up the gas and turn it on, there is what I can only assume to be, gas coming from the two holes on the back of the regulator...not sure what those are for. Is this a malfunction or have I done something wrong?