Increase main jet from 110 to 115 or 120?

Running a tad lean across the range. Thinking of up sizing main jet from 110 to 115 or 120.Thoughts? 115 or jump to 120?

Try raising the Needle 1 slot !

scotch wrote:

Try raising the Needle 1 slot !
 

Bike is running lean just off idle circuit all the way to main jet. Main jet is *real* lean, so my thought was to fatten the main, which would also fatten from 1/8th throttle to full?
I don't know how significant a 5 pt jump is for main jet, hence the question.

I suspect I've rebuilt more of these carbs then anyone.  I Road test every set.  I've never found a need to "play" with Jets and the Main-needle has always remained with the #3 clip position. 
The elevation here is 1,100'.  Open-up your pilot needles and if that's not sufficient:, then Raise the Main.
You're going to be chasing your tail if you start changing-out jets.

I'm running a DG-6 into 1 exhaust with CermaChrome headers and K&N filter. Elevation is 0 feet to 1,200 most of the time at 800 or so.

I have 4 more racks to go through, once they are done it will be easy to swap and test on my test road. 

Oh, used a ColorTune or whatever they are called to adjust idle mixture. Except for carb 1 which still doesn't show any response to idle circuit adjustments. 

"DG-6 into 1 exhaust headers and K&N filter"

As am I.

From experience:  If a pilot needle is not showing a response; in my case it was because someone had used one of those damned "Jet Cleaners" and damaged (over-sized the pilot needle port in the venturi. 
I was able to repair this but it was very "tricky" and frankly - I think it was more luck then determination.