Alright;
So what has been done to warrant going up 3 sizes/2sizes on main jets? it came with 137.5/140 (pipe and air filter aint it)
Are the new jets Genuine Mikuni or some aftermarket piece of shit jet with different flow characteristics and thus who the fuck knows how it compares to the Mikuni real deal?
Why go up from the 12.5 pilot fuel to a 15 pilot fuel...........it has to be just absolutely pig rich at idle, especially at 3 turns out
So oem needles on the third clip..........I will have to look at the service manual on that one- I have not worked on a G-model in atleast a dozen years
73 degrees outside air temp?.........what about bike temp?--did it run better when cold or when hot?--if you do not know.......go ride it right after it has been sitting for overnight while the engine is cold, and see if it runs better then or once it gets fully up to operating temps---
7k in 6th gear is what 90 mph....so a reasonable amount of wind drag load, not just "coasting" type load..........any uphill at all or downhill--tail wind---headwind?
My guess..........based on what you did provide---------it is pig rich at idle and just off idle,
it is likely still too rich up top with the mains you have in (a pipe and air filter wont warrant those changes- the bikes are already too rich with the oe spec'd main jets on every bike that has ever been made in the past 30 years.... you can easily go back down to 140-137.5-even 135's and true main jet jetting would be more than adequate fuel supply
The oe needle if indeed it is the oe needle, and say the load at 7k is super light (ie slight downhill or slight tailwind or just a lower gear) I would say you have a lean miss there, but it could other things too, not even related to the carburetors
OE needles are notoriously late to start the taper, have too large of root diameter and don't taper fast enough......... Thus why 99% of the time they are throw away parts if you truly want to garner the right jetting throughout the range
You need to do the valve service adjustment pronto............ The very first service is by far out and away the most critical to do, as the valves move the most then.....if they are tight by more than a little bit- it will adversely affect performance and running in all areas of the rpm band
So go do your homework, and maybe you will have a decent riding bike when you are done.