Clarinet buttons stuck!
 

I dropped my case on the ground and all my clarinet pieces fell into the snow and became wet. When I got home I used a hair blow dryer on hot and dried them, but afterward, the buttons wouldn't go up! It's stuck and it won't come off. Like normally, you'd press a button with the metal circle thing and then you cover the hole with your finger on the metal button, but the metal buttons won't come up, and I have one metal button that won't go down. Please help!~