Former Australian skipper Ian Chappell says that Ricky Ponting needs to change his technique and show more patience to succeed against spin in India.Ponting has compiled more than 10,000 Test runs and averaged 58.37 in his glittering career, but the one black spot has been his form in India. In eight Tests he has a mere 172 runs at a staggeringly low average of just 12.28."Playing good spinners has always been Ponting's achilles heel. He tends to push out at the ball when defending rather