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Hello all. I've recently bought a Qualcast Cultimatic with an alloy Suffolk 98 engine and Zenith carb (which I think makes it an old one) from ebay. It was bought as a non runner, but on the plus side it was local. I put £60 as my highest bid and won it for £12.50! I cleaned out the tank, removed stripped and cleaned the carb, stuck in a new plug with a dash of easy start, fresh oil, and tĥen a dash of easy start in the air intake and it started third pull. The problem I'm having is the throttle doesn't seem to have any effect, I have to set it on the choke. The carb and throttle spring seem to be setup correctly. The only part of the carb which didn't get cleaned was the long jet as I couldn't remove it with out damaging it. Number 21 in the PDF below. The other worry is the bracket where the spring attaches has been brazed, I'm slightly worried they have done this insitu which has fried the butterfly inside. What do you think? thanks Jon Zenith carb0001.pdf