Hello guys. At the first, sorry for my English. Ok, so. I have problem with my qpad mk50, because "y" key is sticky. I used straw to clean switch, but this works only for about 2 hours, then key again is sticky. I think sticky substance is in switch, i can't sent my keyboard to RMA because they sent me keyboard back. What i should do? Desolder and clean switch? It's hard to do? I will loose my warranty?