I have a KUL ES 87 with cherry browns, last week i spilled a soda on my desk and some went underneath the keyboard and touched to pcb, it still works, but on some usb ports on my computer the volume and media controls act as if you never let either the fn, or the volume key back up, and on others it work 100% fine. I have cleaned the PCB once, but only had 70% rubbing alcohol, I am going to give it a go again with 99% and see if that solves this issue. If it does, I'd be willing to sell it pretty cheap.