BUD IAM USING A DUBRO 24 OZ TANK IN MINE AND GET A VERY CONSERVITIVE 17 MINS WITH 1/4 TANK AFTER FLIGHTS THAT AT TIMES FULL THROTTLE. THOUGHT I NEEDED A FUEL REG BUT LATER FOUND THAT ITS NOT NECESSARY WITH THE TANKS NOSE PLANTED ON THE BOTTOM ON THE SLOPE OF THE FUZE AND THE TAIL END UP TO LEVEL THE TANK OF COURSE USING THE SUPPLIED TANK MOUNT. JIM