Ultrasonic is the only way to go for sealed cans.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Ultrasonic cleaning can eat up aluminum - esp with the wrong chemicals! Be careful... I soak mine in laquer thinner, then scrape and clean the blast chamber with a microabrasion unit at my office (same thing we use to clean the cement out of crowns and bridges). Old scalers and such work great for cleaning threads and such. Ask your dentist if he has any old hand instruments you can have, they pile up after a few years! The blast chamber gets the most buildup and deposit - keep that clean and your baffles will collect less as the deposit will stay in the blast chamber.
After jailbreaking it, maybe invest in another can? You'll have something to play while you wait
Haha that's one way to solve it. Ive got an sbr project on the list next.