Trouble with the Excalibur ChessTime II clock...

Fellow players: does anyone had trouble with the levers of this clock?, I just bought one, and used it about 10 games for now, and the levers/buttons just dont work very well, when hit to hard it bounces and gets stuck in pause mode and it ruins concentration/playing. Its a nice clock for starters (like me) but been looking to get a DGT or Chronos now, for serious play. Now, I know you get what you pay for, but does anyone knows how to fix this, other than e take it to the seller, which I cant, or is just the way this clocks are built and I should get another one ? Thanks ya'all.