Sorted lads thanks for the help, was at the top mount,, the size 17nut that U tightent down onto the shock itself was after loosening out so the shock was moving freely with pressure was put on and then released,, hard to explain it but it was the nut that U tighten by putting the Allenkey into the top of the threaded part.. Took her for a drive and running like a dream again.. Any reason why it would loosen out tho.?