I'm probably going to get this wrong but maybe you'll get the just of it.
Your Pilot jet takes care of the idle up to lower mid range then the main takes over.
If your air screw is out more than like 3.5 turns then you need to increase the size of your pilot jet.
The air screw is basically the fine tuneing of the pilot. Now if I got that backwards I'm sure I'll be corrected.

 

After putting on the big gun, air box lid remaval, uni filter and the removal of air pump and crank case breather mod.I also wondered if I should have put in a 40 pilot but after checking my plug 3 times now I think it is unnecessary,I'm currently using 128 main,clip in 4 th slot and 2 1/2 turns out and the bike runs beautiful.

 

OK,just got off the phone with a local little bike shop. They have a 125 main and a 130 main for $3 each. The big dealer doesn't have anything, but while I had em on the phone, I asked what came in them stock. He said it's a 115 by what the computer says. Is this right? A 115? I think I'll go with the 125 for now with along with the stock pilot. And put in one of those NGK Iridium plugs everyone is yapping about. I think a 130 maybe too much according to what everyone else is running. Sound right?


By the way It's a 2007, no snorkel, stock gearing, and a fully gutted stock pipe with a 1 1/2" outlet now. Haven't run it yet because I don't want to burn it up with only 700 miles on it.
[hr]

 

Dude, I'm running a 132 & 40 with the lid off, and it is flawless!! No hesitation, it just runs perfect.

 

Maybe I should get both jets 125 and the 130 in case.

for $6 it can't be beat. I'm poor remember? I cannot afford to get a whole jet kit right now.

 

Its more like pilot to barley off idle, then the needle all the way to 3/4 throttle (which is why it is the most important), then the main.

Also its a fuel screw--fuel screws are downstream of the slide, air screws are upstream of the slide, but yes the fuel screw basically adjusts the pilot to some degree.

 

[sm=headbang.gif]

 

can we just see some naked chicks then we'll talk about screws

 

Yeah what he said

 

[sm=lildevil.gif]Dang, calm the **** down! You all have **** at your fingertips. You don't need me to deliver it to you. That'll make me feel a little uneasy...[sm=sorry.gif]