Hi Guys After a lot of messing about i have finally found the perfect mounting for my bike. The internal stem mount size is 29mm and of course the quad lock mounting comes no where near this. I went on ebay and brought a 30mm T-Shape rubber Grommet with a 20mm centre. One thing i must stress you must use clear silicon to hold the grommet in place. I used just a little bit of silicon on the base of the quadlock stem mount and left that over night to set. The stem mount is now so secure i have 100% faith in it. I left the grommet in the stem over night to set.