About to re-book gal in for a regas due to a leak ( have flashing display on climate control panel on start up ), I have been told previously that the gas is leaking from a plastic servicable part ??? That would easily be replaced. I have no knowledge of air con systems, however I do know that the galaxy has a number of issues with air con. Does any have any idea with this seriveable part is and a rough idea of how much this should cost (ie part and rough cost to fit and regas ???) Any advice suggestions welcome