hi wyn its good to see you on here. just love your TVR. i have always been a fan of them. my parents used to live near the factory in blackpool so i used to see a good few of them. i dont know the technical details on the gearboxes apart from what i have read but i am sure there are some on here that will let you know how good they are. i do know that when a gearbox is serviced then it has to be done correctly with the right fluids and filters or things can go seroiusly wrong.
hope to hear from you soon and hope to see you at many meets. as conan says it would be good if you could come to germany with us