Ok, Peters, I follows the instructions on that link you sent me, the only difference in my test, was that I ran it at full throttle for about 30 to 40 seconds, which may have been too short of a run. Either way, I pulled the plug, ran home on the old plug, and chopped it, and here is what I found (its hard to get a good pic of the ring, but hopefully you can see it):
So, it looks a little light, and almost 2mm thick. I think the ring is smaller because of how short the full throttle run was. Also, I think that the jetting is actually ok though, because I did a couple runs and it really runs strong from idle to full speed. I got it up to just under 50mph tonight. So, my stock airbox has 4 holes drilled in the lid. One on the bottom, and 3 along the outer part of the lid. All holes are about 7/16" in diameter. So, since looking at the ring, I figured it might be a tad lean, I went ahead and put black tape over the three holes in the lid, leaving just the one in the bottom (besides the factory opening). I figured this would richen the mixture a bit, and I could see how it ran. I made the same trip down the road, and it burbled a bit on acceleration from idle, and at speed, when I rolled into it, it would have to clear out a bit then would do ok. I removed the tape from one hole, so now two were covered, and two open. Still burbled a bit, but a bit better. Took the tape off, and bam, back to great acceleration from idle to full speed. It definitely feels the best with 4 holes open in the stock airbox.
I don't get any stumble at full speed, indicating a lean condition. The pipe looks good, not overheated close to the cylinder, so I am hoping that I got lucky, and it is jetted ok on the main jet.
The only area I noticed it a bit rough, is when you are just cruising, not really giving any throttle, or decelerating... the motor kind of does this fast bup bup bup bup sound. Not smooth, but also it just kind of sounds like a 2 stroke. It might be totally normal, just thought I would see what you guys thought about it.
