GS750 Stumbling

[mpinkorea]

Ok installed the 115 main jets and the 17.5 pilot jets. I put the needles at the 3rd notch (stock). The bike runs great to about 3/4 throttle......then we are back to the stumbling. I think maybe the needle move back to stock and not 1 notch to raise the needle is affecting this. Any opinions.

[KEITH KRAUSE]

Ok installed the 115 main jets and the 17.5 pilot jets. I put the needles at the 3rd notch (stock). The bike runs great to about 3/4 throttle......then we are back to the stumbling. I think maybe the needle move back to stock and not 1 notch to raise the needle is affecting this. Any opinions.

Sounds like your prevoius stumble problem was related to a rich condition. Lowering the jet needles helped. I'd still take some plug reads at 1/3 throttle.
Now it just sounds like you need to find the right main since your stumble is at 3/4 plus?
If it's the same stumble, it figures to also be a rich condition. 115 mains seem a good choice but jetting is always trial and error. I'd probably try 110's?
What do the plugs reads look like now? If you still have uneven reads, something's wrong.