Does it have a A/F screw?

I got the dyno jet kit, and ordered the pilots from Kawasaki, and got a T-handle A/F screw from Kouba.

 

I did the dynojet kit, since I wanted the extra jets and free dyno coupon. For free mods minus muffler, I used a a 132 and it was beautiful from the get go. at 500-3000 feet. I switched it to a 128 when I got the slip on.
I took my bike to Moab 100% stock. was a BLAST anyway. Unless you are riding with someone, don;t get too yeeeeee haw. You can get way back in there, and it is a desert.... (Also FYI, go to the end of town and take the road between the BK and McDonalds... it peters out to dirt trails some awesome riding.... go all the way to the bluffs and on top you can see the Colorado.... SCHWEET!

 

Also, to just change the jet you can finagle the carb and twist it in its boots to get to the jets..... (at least on teh 07 you can.)

 

couple shots of that trip here:
http://picasaweb.google.com/rbarchi/2007KLX250SH#

 

So, you enrichened the mixture with the stock muffler. That's good. But then you got a Muzzy, increased airflow, and leaned the mixture out by going a lower jet? That doesn't make sense. Maybe you meant 128 with the stock pipe and then 132 with the Muzzy?

 

I'm running a 125 jet from Dynojet. Stock exhaust with a couple holes drilled and all the other free mods. Debated tryng the 128,but decided to ride as is till I get the FMF system I have been pining for.

 

where did you drill the holes? what size are they?got any pics? did it help the exhaust flow at all?