360 rebuild issues

Just a FYI; 2stroke engines have holes in the cylinder walls, hundreds of times bigger than that,and all over the place and across from each-other,etc, and they dont break rings or wear rings because of them. IMHO, on an econo-street build, a little divot/surface blemish (that little half-inch long one)would be a non-issue.Now about those other lines in the pic; the shadow-line just above the top of the piston,the one that looks like a reflection,I cant comment. And that long curvy line;whats that about? Anyway I see you have made your decisions.Jus saying.