Oh my. So going back up to your filter. I am going to say that your filter is not a great one for a Sha. It has restriction built into it that can not be adjusted and I do not think it is playing well with the Sha. If you really want to use it, you can try removing screens from the screen pack one at a time until you remove all the screens and then it is just your screen filter again. I would first ditch that filter and just use the screen pack with the original plastic cover.
I would also start off with something close to a 65 jet in it, but probably something like a 68 or 70 might be the one.
If it seems like it is muddy and too rich, just remove a screen from the screen pack. You will notice some screens are finer than others. You can combo them up to get the right amount of airflow. It is like a puzzle and can be kind of fun.
I save all of my screens, I have so many Sha carbs that I have a bunch of these screens left from past tunings, but sometimes need one for a new tuning.
Get it tuning real nice with the screen pack and black cap then see about replacing the cap with that mesh filter if you want to try that again. My mesh filter is really just an open screen, just designed to keep larger objects from entering my forward facing carb. The screen pack controls my air restriction and adds finer filtration of debris.