I know that this has been asked before, but I'm afraid I can't find a definitive answer. If I pass a TMG class rating test, I get a TMG class rating added to my licence which will be valid for two years from the date of test - but this expiry date will be different from the expiry date of my SEP rating. It would obviously be convenient from a renewal point of view to have them expire together. Is it possible to renew a rating by experience early - when the other one expires? Is there another, better way of going about this?