Thanks Russ i will try a 1/2" socket in the morning. That is quite a collection there Arctic, I am surprised at myself not already owning some of these considering i have been restoring classic cars for the last 30 years . I do sometimes weld a big nut over a damaged one but i didnt really want to resort to that on the 75 as it seems a bit too brutal on such a lovely car ! I'll save that for my Ferguson tractors !