Hi and welcome to Ninjette!
Please outline in detail procedure used to clean carbs. For bike that sat for that long, more than “carb cleaning” is necessary. More like complete disassembly down to every single nut & bolt and individual component is necessary. Replace all O-rings and seals. Every internal passage thoroughly scrubbed and flossed. New jets. Ultrasonic soaking for weeks on end in radioactive caustic solvents. Micro soda blasting @ 100000psi. Do search for “clean carbs ducatiman” for threads with photos and type of cleaning needed.
You can also troubleshoot by collecting more data. Set needle clip in top #1 position for least amount of fuel. Then try #5 position for most fuel. Which position improves running best?
Also post photo of your needles. There's been cases of incorrect needle tapers causing this issue.