Hey All I thought I would share with you a company called Seal Imports who funnily enough sell seals. They have offices in Brisbane, Townsville, Sydney, Melbourne and Tasmania In regard to the carby o'rings they have sizes down to the 2mm. Cross sectional area is important, particularly on the pilot jets, some are under 1mm thick. Ensure they are fuel resistant and advise them on the application. i think they are around 0.50 or $1 each. Best to take the old seals with you and grab a few assorted sizes which may come in handy http://www.sealimports.com.au/ thanks Chris