Just pulled the carbs on my 1999 Superhawk for cleaning. The previous owner has upgraded fast flow jets, but left the slow flow alone. After an hour in the ultrasonic cleaner, I checked the slow flow jet and found that I couldn't see down through the jet I tried to push a cleaning brush through jet from top to bottom, but couldn't. The four holes in the bottom part of the jet are clean and cleared up nicely. But, I can't see daylight down through the jet. How do you all get the jet cleaned out?

 

Update: I watched a YouTube video that showed one guy using a butane torch to literally melt the varnish, then push in a very thin wire strand. I used a sewing needle to get a tiny opening started, then tossed it into some Evapo Rust.

 

I haven't had to in a long time, but I use a micro drill bit. Usually just pick one that I know is smaller than the hole and push it through then make sure the debris is gone.