one of mine manifold gaskets has gone, i got 7 out of the 8 copper nuts off, but the 8th that sits at the bottom 2nd in from the right if looking from the top, i cant get off for love nor money, i cant see the state of it because of where it is , a ratchet wont fit as there isnt any room, nor will a 12mm ring spanner b'cos the nut is rounded (i guess), has anyone please got some ideas on what i can do?
cheers