My remote has always had a button that I would have to press 10 times for it to work once. Now I have to press it about 50 times (very hard) before it will work once. One or two other buttons are starting to get stubborn as well. Sometimes they will take 2 or 3 presses to register (with a brand new battery). Is there a 'safe' way to take the remote apart and clean the pads off? I know people used to use erasers to clean remote contacts but I don't know if that's possible with the rio remote. I don't want to humpty-dumpty it...