I have a Homelite Super two that smokes a lot and leakes oil out the chain bar oiler when it sets up any length of time.It runs and cuts great on a 50:1 mix. The oil tank pressure tube is missing the brass end and duck bill valve. would this let the chain oil siphon out when not running as well as allow oil to be sucked back into the crankcase when running and changing cutting positions creating all this smoke? tks for any answers. major 50