Korg Mono/Poly

Hello. 
I have been using my Mono/Poly a lot these last three months, and a couple of days ago it started to act up. When I haven't played it in a while (hours) the Low Pass Filter sounds a bit "overdrived" and the sound isn't consistent (shifting like the OSC's can't "push through"). After playing some notes and turning the cutoff and resonance pots, it finally settles and the problem is gone. As a reflex I bought a SSM2044 LPF IC in case anything was wrong with my filter.

Should I be worried? What could be wrong? Should I get it cleaned up?

Me and my band is VERY dependent on the mono/poly and a meltdown would be devastating.


Check out my music btw. It's all mono/poly :)

http://soundcloud.com/battlekat-music/the-pain

Thank's
Jeppe / Copenhagen