Thanks for the insite to the stock system.
The reason I asked the question was because I don't notice any rich fuel condition under WOT, nor any stumble when backing off.
I did drill the exhaust a little, which of course make it seem faster,....and if not faster, a little louder. It sounds better if nothing else,.....and I don't like the sound of a "woosie" bike, as my son calls them.
The only "stock bike" problem that I can see/feel, is the lean fuel condition in the low speed (1/4 throttle) range, so I plan on doing the spacer...needle mod one of these days. Except for that, I think the bike runs perfect, sounds good, and under WOT, it'll scare me just the way it is !