Now thats a new one, havent heard of that one b4. Ace will take care of it for you, just send it in, you should have it back in a week or so, because they just recieved the parts for these engines in. The ring must not have been installed properly, that really sucks, but Gabriel at Ace is good, I would email them also from their website. I had to send my 1st one back because of the metal fragments scoring my liner, and he was very helpful. Let us know how it goes, Daz...