It was new so it had to be loose, took it all apart and turned out it was in fact loose.
Soo i screwed it back in fully using the a hammer and screw driver to get it real tight and then put it all back together.. now 5 days later its knocking around again.
The body work where the mount was has clearly been welded up before but it looks like a good job (pics attached)
Anyone got any ideas on how to stop this problem re-occuring when i take it all apart tomo.. maybe a rubber washer??
Help much appreciated
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Team Ducati 7482003 Subaru Impreza STi