I recently picked up a 2.5 gal frisco style tank. However when i put it on, after turning the gas on, after a few seconds when the bowls fill up, gas starts pouring out of 1 of the carbs. I figured the float may be stuck, but i've gone through them a few times and everything seems fine. It was working fine before the new tank. The tank just has an on/off valve and runs direct to the carbs. Could there be to much pressure forcing the needle down? Any ideas would help. Thanks!