RUBBER FOR VHSH

Struggling to find a dealer who sells the correct manifold rubber , flanged type, for a 30mm vhsh carb.
This is the second one i've owned,
Never had a problem with the first one because the stub had been modified ( shortened stub ) to use a PHBH rubber.
The new one is unmodified ( stub is 17mm long ).
Anyone know where I can get the correct rubber ( flanged type )?
This is the second one i've owned,
Never had a problem with the first one because the stub had been modified ( shortened stub ) to use a PHBH rubber.
The new one is unmodified ( stub is 17mm long ).
Anyone know where I can get the correct rubber ( flanged type )?