I have noticed that my L + R buttons are not working, but i found a solution to this issue.
step 1: if L is not working make L face you're face or vise versa.
step 2: put you're mouth over the button that is not working (yeah this sounds weird just do it :P)
step 3: then blow into it (not to hard that it could wind you)
step 4 (ish): repeat if needed.
hope this helps anyone that has this problem! :D
