Duo 2300C keyboard is stiff

[AC Rempt]

Hi. Just came into possession of a very nice PowerBook Duo 2300C. Everything seems perfect, but the keyboard is stiff as a corpse. I really need to press the keys for them to register, making typing a huge pain. My plan is to pull the keyboard and clean it with some IPA, but I just ran across a Reddit thread saying IPA is not a good idea for Duo keyboards.

So should I just pull the keys and dust it/clean out grime with an eraser and some air? Or is there another method that works well for these machines?

Thanks in advance for any help.