hey guys ,,,so i picked up a 2 headed torch from lfs and its tentacle(or whateva u call them ) are not fully expanding. they come out about 3/4-1 out from the bottom,,,i was wondering if im doin anything wrong,,,this is my first torch and i want to suceed with it and have a million heads,,,i am dosing kent a-b along with kent magsnesium tech with also kent strontium@ molybdenum all my parameters are within normal range any suggestions???