Eduard, you beat me to it!

Stefan, while this ring is normal, it does seem a little low and close to the piston pin bore, and if compression will be able to bleed into there then the effective combustion chamber volume will lower quite drastically. I would like to see the wear ring about 1mm higher up the piston, where the 2nd ring cut is, and the 2nd ring cut .5mm higher (closer to the 1st).

BK