Scoring and carbon on piston ok

[HickoryRidge]

I pulled the muffler off a 372 XPOE and found some carbon near the top of the piston and if you blow it up, you can see mild vertical scoring on the piston. Anything to worry about here or just run it? It runs fine I just looked at the piston since I purchased this secondhand.

 

[Kenskip1]

I would use a quality oil mixed at 40/1 and run it. Otherwise the piston looks fine to me.