I got a series 2 about 6.5 months ago and the right bumper stopped working. Still clicks but only registers maybe 10-20 percent of the time. I play only about 5 hours a week so no way I abused it. Microsoft has that BS 90 day warranty on them. Anyone have any advise? Really dont want to spend another 100 bucks for them to fix it. I had my original elite and it broke 2 months after the 1 year warranty and they said they would send me a refurb and ended up sending a brand new one which was unexpected.