Well, I can get the 024 to start and run but not very well. It will run on half choke, won't idle or run with the choke off. I'm thinking the new carb is bad as turning the screws makes little difference. The carb boot and impulse line are new and properly installed. I have the kit for the original WT-22B carb so I took it apart. Fortunately, it is pretty clean so maybe the new kit will get everything going again. This is especially irritating as I have alot of wood on the ground just the right size for this saw waiting to be cut, and the Echo CS-400 is ready to roll!