Mine's had a wobble for over a year. You can now hear the wobble as well as feel it. It's been my gamer since Dec of '10. I even hit some BP with it still. Easily 4000 swings on it. Hit with it this past weekend in 60 and below weather with our last game being at 12:30am and the temps in the 30s. I can't seem to break the damn thing... luckily.
If you don't like the wobble in the swing, grab the barrel and the handle and twist it between every few swings.