I am using the engine from a 280ZX in a car I am building. I chose to remove the EFI and computer stuff and replaced it with a pair of SUs from a 240Z. The SUs sat on the shelf for several years. I can't get the car to run right. Specifically, the carbs flood after I shut off the ignition. I have a low pressure fuel pump. Are there soft parts in the SUs that I can get in a rebuild kit? Ther are other problems (I think) but need to get this sorted out first. Any ideas? Dan Danley