Wow. Maybe you should abuse it. Mine's been through hell and back and it carries on like a trooper!
I've had mine since beginning of 2002 or end of 2001. I can't recall. Either December of 2001 or January of 2002. Either way, it's lived in a rack, then moved around bounced around in a plastic case with cables, before going back into a rack again. The power supply was dropped and replaced by a Radio Shack unit of the same specs. Mine has been used at darn near every event you see on my web site, as well as a few that never made it(before I started taking pictures). It's also NOT been used at some shows, but still was powered up. Now, it's in a rack with other phased out gear, but isn't lost or forgotten.
I'll still say try those "home solutions" if service gives their blessing. I use these solutions myself on my mxiers, keyboards and other MIDI controllers to clean out dirty faders and knobs. I also use it to clean out other dirty contacts. Of course, disconnect power before doing anything!!(very important!). Spray, move back and forth slowly at first, then gradually faster, say 2 per second at most. The main thing is just to get that stuff all the way through the fader contact strip before it all evaporates. You may have to do this twice.
I have 3 units(64 LED Pro's) in with Service right now. I expect to get them back at the end of next week. The service folks are great. The service is great.
I'd say excercise your controller more often. The lack of use can also contribute to problems because stuff isn't being moved around enough to knock crudd off. As clean as your studio may be, it's still exposed to dirt, dust and moisture, just people being people.
Best of luck to you. Let us know how it goes.