I have been running a Kehein PJ carb for many many years, it ran great but I am switching back to a modified Stock Mikuni.
I am having Post Tramatic Stress Flashbacks of fighting with the carb spring trying to adjust the needle. The PJ was much easier. What is the easiest way to put spring/throttle cable back together after adjusting needle.
Make sure that the throttle cable is free to float under the gas tank and is not zip tied to the frame tube.
It just takes some practice. After doing it a thousand times or so you will be able to do it with one hand and your eyes closed.