ok, I have took it back to Rap4, they checked it over, which took about 45 mins. After would they took me to there test centre at the back of the shop and chrono tested it, reading was 268 to 276.
So that they did to get it down, I dont know, suspect replacement of the spring.......??????
I will take the marker to my local paintballing site and re chrono it there to make 100% sure, I will be leagal for the next Diamound Wars