You don't want the liquid propane running out of the bottle in any way. So, keep it upright so that only the gas exits the bottle and it should work without any issues.Just got the AGS annealer and boy is it compact! Anyway, trying to set it up and I have a question. I am using the small 1 lb propane bottle and was wondering if the position of the bottle(upright/on its side) has any bearing. Thanks.