[(F5)]

You ideally need a viewer, magnifier of some sort. Hold it up to the light and look through it. Any ovality is bad. Depends on how much it has been used. Vibration and the needle in there does most.

You can buy replacement tower that has jet in there, but not easy to find. Other options too but see where you are at. Blocked pilot is common for bikes that have sat for a while. Try turn tap off on your way back to truck to drain floatbowl so it isn't sitting in gas for xxx weeks if likely.

Cut the needle in 1/2 -so you aren't tempted to use it.

I've often undone the subframe mounts to lever out of the way for carb removal, replacement. Just easier than struggling with rubber and trying to get it back in especially on the shock side.

Blow through every hole, ideally with compressed air. Once main clean is done you can get to pilot and main by removing slide (clean tank above remember) and rotating away from you to get bowl off. Remove sprocket guard. Jiggle floatbowl to remove. Dont lose pin for float. Never over grass.
Ok, lay something on the grass.