Hi BenK,

This is probably the cheapest and best option,

http://www.ebay.com.au/itm/Carburet...H35-H40-Engine-Carburettor-/111411844170

I must admit I did trawl through the two websites that Mr Jones suggested and there is a lot of later model engine stuff on there, but as far as Kirby's are concerned it is their carby's that are the main let down with air leakage through various spots and thus a whole new carby will eliminate any of those issues and this one looks pretty much the same as the originals, especially when they are painted orange. At $22.95 to your door, it's unbeatable I feel.

Cheers,
BB

I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.