thanks for your help , the good news is I managed to remove the restrictor myself . The restrictor is located under centre plastic cover I had to remove both side panels , back panel then the centre panel then you can see the restrictor it justs stops the throttle cam turning all the way , to unscrew the restrictor I had to remove the seat assembly, finally removed it. Dealer wanted £150 pounds to remove it !!
what a difference in power output wow !!
hope this makes sense cheers Daffy