Yes, it is a tower 75. It runs quite well. Starts consistently in 2 flicks of the prop. I occasionally have problems with the engine not wanting to stop. I just gently nose the prop into the grass and it kills with no damage. My o-rings are very tight. I am pretty sure that the air leak is coming from the fit between the carb housing and the rotating barrel. I had a burr on it and after sanding the barrell lightly the problem got worse. All said, I am happy with it (a good value)

Thanks for the advice. Given that I am still learning, controlability is more important than speed. Will the SE be faster or slower than the stick that I am flying? Will it be a good advancement from the stick to teach me more?

Thanks