I'm having big problems with my Concert header unit so I want to pull it out and have a bash at fixing it or stick a new one in. But, I cant work out how to remove it from the dash, is there a special tool to remove them? do I have to go to the dealer? any tricks to get it out with minimum fuss? Also when accelerating hard my CD changer stops working and I get 'NO CD' appear on the display. Anyone know what the problem is here?