Let her sit over night and pop the lip off. Like the other gent said, I'll bet you have a missing screw and/or damaged band wafer switch. Good news is they are not too bad cost wise and pretty easy to replace if its beyond repair.
Be carefull. If I can be of any further help, feel free to contact me via qrz. I have an H model. I have done about every mule headed mistake and managed to repair it with a little help from my friends.
Cheers from Dave
KD8GEH Near Dayton