Many thanks, especially for the pic too - Erm, that would be me...I took it to bits lol and I put it back just there - mind you all I did was placed it about there, got an open ended spanner and forced it down until I thought it had engaged in a groove - It is possible it didn't and I didnt push it far enough. I'll whip it off and see if its located - Thanks again, I'll report back so as to close this off as fixed if it is.