I had a problem with air leaking out the bottom of my noid also. I had to reset the noid (not by the 50 clicks with no air and eyes off way but try that first) by opening the noid and resetting the pin inside. If i remember correctly it should be in the "out" position but im sure one of our fellow min owners can confirm this.
Also as said above, screw the back cap all the way in and back out about 3 turns which will make sure the poppet seals.
Hope it helps bud
Jnr