right i'v had a go to day this is what happened,right i disconnected the iscv and the rev's slightly droped and i mean slightly,so i thought i'll turn the recessed screw clockwise to turn the revs down and i could'nt as it's screwed right in so i turnred it anticlockwise to check if the screw was stuck,it was'nt.where do i go from here looks like someone has been playing b4