Yesterday I was very disappointed when the first flight was to take place of my very first completed kit. It is a Great Planes "Slow Poke". I had much trouble with getting the plane to balance. It took much more weight and was rather heavy. I was so excited. However, since I had never flown a tail dragger before, I asked one of our club's most experienced pilots to check it out first and then fly it for me at least one time. Great Planes says this plane can use a two stroke .10 to .25 engine. I chose to put an O.S. 15 on it. The grass on the field was very short. The disappointment? The plane never got off the ground because the engine would not give enough power. We took weight out which made it slightly tail heavy again and even then, the engine would not give enough power. Club members said I needed to go to a larger engine. After spending much money and time on everything, I cannot fly it witout handing out another pile of money. A new O.S. 25 engine would cost in the area of another $60. Wondering if what has happened to my first plane would be worth telling the Great Planes people about this, so that they will amend their advertisement about the smaller engine and balance problem, saving others from wasting their hard earned money? This is already an expensive hobby and now to find out that I have done all this for nothing has really disappointed me. Would appreciate comments back concerning if I should tell Great Planes about this. I'm not looking for or asking for anything back from Great Planes. But if what happened to me would help someone else in deciding what size engine to use for this plane, then this is a good thing, right?