if, after your 2nd attempt, you still have difficulty...I stand at the ready, consider my services. Getting these things truly clean and setup correctly is tricky...requiring specialized equipment and some experience.
Some positive forum feedback can be found here
https://www.ninjette.org/forums/showthread.php?t=239678
Click the Custom Carb Service link below to see what I do, and some in-process photo's.
Here's a taste...