to try and lighten my steering on my 1994 4/4 i have greased the bronze by jacking them up on a block of wood ,then greasing until grease comes out of the sides i have also lubricated the universal joints on the steering column .after spending some time crawling about under the car i, i am sure it has a steering box .as i have mentioned before i am not a mechanic and having no morgan dealers in guernsey to ask ,i try to service what i can .having crawled about under the car i have examined the box ,it has 4 bolts on the top all the same size , and one larger about central of the 4 with a threaded section through it which i believe i dont touch there is also nut on its own about 17mm is this the filler ,if so how much do i fill . Regards Sarnia. THANKYOU.