I cleaned it with alcohol, readjusted the post.....it worked, then it hissed at me again, so I banged the crap out of it....it worked for a while, then hissed again. I banged the crap out of it again....then repeated a few more times.....finally I won the battle......it's working great and I feel like I won a battle.....yeah for me, and many thanks to y'all for the great battle strategy.