I hope the picture work as I'm not the best at computer's. ok so here's the story.
I brought a rebuilt 1380 nearly two years ago from a reputable engine builder, and it ran great for 1300miles. I wanted to put the engine in another mini and thought I would check/rebuild the head and I found this.
its hard to see in the pictures. so after seeing this I pulled one of the pistons out to see if there is marks on the piston and check the ring gap. the ring gap on the top ring is 0.014".
the piston pictures didn't come out very well but there is very light straight scratches on the skirt.
this is the bore from the bottom.
I called the engine builder and emailed pictures to him and he said it'll be fine just put it back together
but wanted a second opinion.
any help would be great