Just need someone to clarify that i have the right idea. The bike used to have a 33,188 but i felt they could do with a few numbers up so there could be more room for adjustment. With the 35,122 installed the bike ran much better at 3 turns out (think that's a bit rich with bigger jets). When the bike was warmed up idling in neutral i fiddled with fuel screw, finding that the revs started to drop just passed 3 turns out (is that because there is to much fuel overloading it?) and at 2 turns out it just started to get too lean with a delay in the throttle when quickly turned. So should i run in the middle at 2.5 turns out on the 35,122. It ran OK at 3 turns out, but it revs cleaner and faster at 2.5. Is 2.5 in the ball park for these up sized jets? Or am i way off.

Location : Southlanarkshire, Scotland 700 Ft

Sounds bout right. The screw will be sensitive to within 1/8 turn, so you can adjust on the day and the temps.

We always fit 36 pilots to the carbs for this model year - but as cope says the fuel screw is very sensitive to turns of a quarter.

Right thats good, ill try 2.5 next time i am out. So if its warmer its best to richen it a bit by turning it out 1/8 from 2.5 and in 1/8 when its cold?

One other thing, last time i was out it drained the tank faster at 3 than before on the 33,118 at 3.5. Would the change in the jets make any difference?

generally weaken when its warmer as air less dense

Right thats good, ill try 2.5 next time i am out. So if its warmer its best to richen it a bit by turning it out 1/8 from 2.5 and in 1/8 when its cold?

One other thing, last time i was out it drained the tank faster at 3 than before on the 33,118 at 3.5. Would the change in the jets make any difference?

As you have installed jarger jets, you may indeed consume more fuel, yet I would think any difference minimal unless a lot of running at high throttle openings.