Old Deis,
You got me thinking and since i have saved all the rings that I have replaced over the past few weeks I decided to go check them all out. The first one out of the number 2 cylinder looked a little diferent than the rest when I first pulled it.
Guess what? The original 10mm ring looked funny but I did not really notice it that much since the holes are bigger than the new rings.
When I overlay the burnt ring in the photo here it matches the old one perfectly. It was burnt also in the exact same pattern!
You can see the slight difference between it and the other cylinders in this earlier thread. Note the difference in #2.
http://www.peachparts.com/shopforum/showthread.php?threadid=56023
There must be something wrong with that prechamber. In my compression test that cylinder was just as good as the rest so that is all I can think that would be different and since I put in this new (old) pump and I still have the same symptom now I can chase this issue and see if that fixes things.
Thank you for the note as I was just about resigned to live with this little miss (although it would drive me crazy forever).
God, I love this board!!!