Hi. I Have never posted to this thread but I have read every one since it started. I was one of the first to buy a SYSSA 180 engine. My choice was because it was made in the USA, I have had some problems with the engine but Todd has bent over backward to make it right. Some times he is hard to contact but he always has come through. My biggest complaint was all of the dead sticks that I had. Cost me a couple of fuselages for my H9 Taylor craft. Long story -Short, I Could not get the high speed mixture rich enough. Run excellent on the ground but would flame out on the back leg of the pattern. Even with the high speed needle 3 turns the mix was still lean. Did all the things to correct, clean, vent cover to fuselage, check fuel system and more. In desperation I installed a carb from a sweet running Zenoah ei 26. Solved all my problems. No dead sticks since. I am not new to small 2 cycle engines. Ran a small engine repair for about 25 years. Just my thoughts.