thanks a lot. I am getting there! So it seems the meetreing diaphragm is perforated. It is hard to see though. It just gets wet when I press it down. It is also stacked to the carb, so I haven't removed it yet. The carburetor is a WT-148A superseeded by WT-148-1 . Apart from ebay is there any other way to get the kits? Are there Walbro distributors around? I was looking at their web site but did not see anything in Australia