mazda 6 2009 2.5 sports luxury uk model. terrible mould smell when a/c is switched on. a/c clean mist and spray tried twice no benefit. I want to physically clean it after removing dash board etc. Any one knows the step by step instructions on removing the dash board and getting to the a/c evaporator core? Is there a danger of exploding the air bags in the process? Any help will be thankfully received.