Hi all, Recently picked up my Commander 112A from ADSB upgrade and when I wanted to set cruise settings, the prop leveler wont stay and will go forward. Now, on the preflight, I noticed oil in my left tank fuel sump. Engine fuel sump and right tank sump were clean. Didnt noticed the issue on runup because when I cycle the prop y dont leave it in any back position as it "cycles" During the flight I had to keep the leveler in position with my left hand while using my thumb to add/remove power. If I tried to set the prop in cruise, it will slowly return to full possition. Noticed the same while taxiing after landing as I was trying to understand if it was something while flying or permanent. Is it possible that the governor has a leak? but how will the oil end up in the fuel tank? Unless it is from somewhere else but only the brake lines are close... With the engine off, I pulled the leveler and stayed in the position I left it, so definitely it is not any spring. Any clue? Thank you!