Sticky Trim Button on Ray Allen G205

I have what I think is a sticky trim button on my co-pilot side G205. I don't think it's a sticking relay, because working the button on that stick is the only way to get control of trim back. The stick was doused pretty heavily last summer with... lets call it "recycled breakfast." I believe this is when the trouble began. It's only happened three times total, but that's three too many.

So my question -- does anyone know if the switch is removable / cleanable / replaceable? I've squirted electronics cleaner from the top and it doesn't seem to have made a difference. I'd like to have an idea of what to expect prior to disassembly, if possible.

Thanks,

-jon