Vintage Synth Explorer Forums

I got my K1-II today. I really like the sound, but it has a few problems that I hope are fairly easily fixed. Two keys -- the second highest C and the highest E -- are dodgy. They sound if I strike them at the top of the keys [the thin part], but not at the bottom of the keys. I'm wondering if the problem is just dirty contacts. I wonder because the buttons -- those skinny rubber switches -- require some effort and jiggling to press. They work, but it takes some effort.

Am I correct in assuming that these are just contacts that need to be cleaned, or are they -- the keys and the buttons -- indications of something more serious? I've cleaned key contacts on combo organs, would the procedure be the same with this board?

Thanks.