weber carb, rubber mount

Finally I have found what could be my kangarooing problem..  with the engine off I was playing with the throttle on the carb and noticed fuel leaking through the rubber mount under the weber carb…  after taking it off I cannot see and obvious split anywhere but I know it was getting through there…

Are these mounts specific for the weber carb or are they a standard item?  Where do I get them from and how much are they?

Thanks
Marc

Not sure which engine you have - I have the 1781cc 'EX' engine in my Clipper.  When I converted from the Pierburg to the Weber 32/24 it fitted onto the standard rubber mount.  The mounts are available from German and Swedish for less than 20 quid…..local VW dealer was also able to supply at 48 quid.

GSF it will be then, thanks