RCFly, was yours the ABC or ringed engine with the two needle MK style carb? Mine is the newer EZ carb which itself, also has problems. Talked to Duke Fox one time at Toldeo before he died about his engines and think I got him mad. His engines had a lot of good features and if you happened to get one that ran, you got a good engine. Unfortunately, I think he released too many designs before they were totally bug proofed and turned a lot of second buyers off. Anyhow, he was a stubborn, proud person who I don't think was receptive to ideas from other people as we all sometimes act. Had one of his .40 engines that I could not kill! Ran it till the rod bearings must have had .004/5 clearance with the crank, really sloppy, and still kept running well[
