Hello, I was recently gifted a old McCullouch 7-10 chainsaw. The thing is a testament to old school durability. It started up with just some fresh gas. I filled it with good 40:1 fresh pre-mix and new bar oil and it ran great. However, I quickly realized that the oiler system did not work. Neither the manual, nor automatic. So I tore it all apart and finally found that the automatic oiler piston was stuck. I cleaned it all up and got it free. So then it worked. I started cutting my huge tree apart but quickly realized that the dang thing was OVER oiling. I popped the front oil cover off and adjusted that nut in many turns. It was almost touching the bottom of the oil reservoir, now it's much further up, limiting the travel of that piston. But I'm still producing huge gobs of oily spooge that start running over the bar cover. I wasn't using the manual oiler when it did this. Is there some sort of phenomenon I'm not aware of, like a blocked vent or something causing this?