Regarding Super Tigre carb problems. Jett Engineering that manufactures the Jett RC Engines has had so many requests that he now makes carbs and their tuned mufflers for the 3000 Super Tigre Engine as well as the other models of these types. There is a big improvement with these installed. There is an RPM increase, but a far greater torque increase which yields greater thrust. I have personally observed a fellow flying club member's model airplane with a tuned pipe and I was not that impressed, but since he converted over to a Jett Tuned Muffler, it screams now. A big and noticeable improvement over his tuned pipe. It may cost up to $85 for the muffler depending on your make/model engine for the Jett Tuned Muffler, but it is worth every nickle. Jett Engineering Carb replacement will also cost $85 for these engines as shown at his web site. http://www.jettengineering.com/

Hope this helps those wanting more out of their Super Tigre Engines. Since I have read that these engines are long lasting engines, I will be ordering the Jett carb and muffler for my new ST-3000 engine as soon as I find what planes are suitable for using this engine in.