Bonneville 865 Efi Head Gasket Set.

Hi, new to the forum but I have found loads of useful info on here sdo thanks in advance.
Having snapped the threads off all four exhaust studs on my Bonnie 865 head, I have now forked out for a second-hand replacement head. However I am unable to find anyone selling new cylinder head gaskets and breather tube o-rings.
When Googling for these items I get loads of hits for old T120/T140 bonnies, but nothing for the new Hinkley bikes. I have also tried Triumph dealers and Triumph UK for OEM kit but to no avail.
Anybody got a link they could share to a dealer out there selling head gasket sets?

 

Thanks MadMrB, got the gaskets I needed for a not too eye-wartering £72. This will teach me to buy a 'bargain' Arrow 2-into-1 zorst!