When was the last time you saw one of these (mystery race engine purchase)

Jeremiah (jd) said
Good eye! That is a scratch from some poor soul battling it out with a spirolock. One eeason I like to use Mahle pistions is the wire lock. Spirolocks are awfully complicated for what they accomplish.

I usually never have an issue with spirolocks, except my own pistons I had made a mess, I was in a hurry and not getting paid though lol.