cygnet wrote on 09/18/17 at 21:10:13:Well I added one more washer and no change. Great mid range but loads up at idle. I can turn the idle screw needle all the way in and it does nothing. So it's back to stock, good mileage, good idle, crappy mid range.
If your idle speed is high when you attempt to adjust the idle fuel mixture, you won't get a response as the needle will be supplying fuel. You need to drop the idle speed down to 800 - 1,000 rpm to get in the range....don't leave it in this range after the adjustment is made, and don't spend a lot of time with the bike leaned over on the side stand while making the adjustment (but a board under the kickstand to level the bike up a bit).
The ideal place for the idle screw to be is between 1.5 - 2 turns out. A pilot jet that allows the screw to be in that position is the correct size. If you have to go out more than 2.5 turns to get the smoothest idle - the pilot jet is too small. If you turn the screw out less than 1.5 turns to get the best idle.....or you can turn it all the way in...then the pilot jet is too big. (There is a bypass hole that flows fuel around the fuel screw, and even if the adjustment screw is turned all the way in, fuel is still flowing...too big of a pilot jet and too much fuel flows).
Don't forget to turn your idle speed back up once you have completed the adjustment of the idle fuel screw (pilot screw).
At your elevation - the #47.5 pilot jet is probably going to be a good place to start.
In the diagram below, at #2, you can see the bypass holes prior to the pilot screw. This is where the fuel is flowing when you have the adjustment screw turned all the way in.
The surging you were having at light throttle settings is related to the needle being too low - so you need to raise the needle to correct that. The 2 or 3 washers that works for us at lower elevations may need to be 4 screws at your elevation - to correct the surge you need to raise the needle a bit to provide a slightly richer mixture.