I have found it sort of. Soemthing to do with 3rd party repaints, mine included. I took everything out of the Community folder apart from the main turbo folder. That made the Custom work .... added everything back into Community folder restarted etc ..... and it still works so hmm LOL. Thanks for your help, I'm sure it's not really fixed and may break again , i think it'll be something to do with the aircraft.cfg files and the different handling of the combined (old school) one in the main turbo folder and separate ones used by 3rd party repaints .....