i don't know if this is normal but my gas regulater has 7 settings so far so good. but it goes way past 7 one way and way past 1 the other way. several times maybe 3.5 complete revoutions in either direction. is this normal? i figured it would only turn down to one in one direction and 7 in the other direction, bottoming out either way. im not concerned about too little gas as i can just keep opening it up. but im worried too much gas will break something. any thoughts?