I have an old kegerator I bought from a friend, the CO2 tank and regulator are small and old. The CO2 tank was just tested. It works well. I left the kegerator off for about 1 and 1/2 months. Today I got a keg, cleaned everything and put it all back together. I went to pour my first draft, nothing came out. I knew there was co2 in the tank and checked. Untapped and tapped multiple times. Played with the pressure, and still nothing. No leaks anywhere i could find and I watched the beer slowly move through the hose. Yet nothing came out. Please help I am pretty new to this.