You have been trying to turn it the right way, yes? Different direction depending on whether it's English or Italian thread ...
Can't really tell from your pic, but from the damage done to the teeth it looks as though you might have been trying to turn it anti-clockwise, which would loosen an Ita drive-side cup but tighten a BSA one.
You have been trying to turn it the right way, yes? Different direction depending on whether it's English or Italian thread ...
Can't really tell from your pic, but from the damage done to the teeth it looks as though you might have been trying to turn it anti-clockwise, which would loosen an Ita drive-side cup but tighten a BSA one.