Tried my 222b tonight filled it half way up the tank and gave it 12 pumps held pressure as i installed new cap. Went to fire it up and it fired up and mantle started to glow but a flame was coming along with it. I turned it up high mantle still glowing good but still a three to four inch flame, same on low. Let it burn for five minutes didn't level off to just a glowing mantle.. Gave it another 12 pumps flame just got bigger. Any idea whats up?