So bloke at four ashes had a bit of a drive about today to see if the gearbox is ok. Came back saying he couldn't get it to crunch and if anything it's one of the smoothest boxes he's had with that mileage. Good enough for me really, he will know more about it... He mentioned the aircon noise could be fixed by a good re-gas. That will probably wait until Christmas time as I don't really need the aircon at the moment. So now I'm sure there is no expensive gearbox work to be done, a desperately needed set of PS4 tires have been ordered. Install booked for next week wednesday. Just have to try and keep it on the road until then... How hard can it be?