hoping for some help from keyboard pros...

recently I noticed the keys on my PA800 needed cleaning. I used a microfiber cloth, no liquid or anything. it seemed to work fine, but now when I play the keys are almost too slippery. they don't feel right somehow.

I'm wondering if I've done any damage, and if there's a product I can use to restore the feel.

thanks in advance for any/all advice! it's appreciated...

tm