I have been flying trainers with some succes for about 6 months now and wanted a more durable/manuverable plane, so I put together a spad. My first try at flight did not go so well. I was on a lake that was smooth as glass with 2" of brand new snow on it. I would go to full power and just before lift off the plane would just do a turbo loop even with maximum opposite rudder. the plane does not have a tail wheel it just drags on the ground,but comes right up whith power applied. The rudder deflection looks about normal.My question is can I increase rudder travel? if so how much is too much? It doesnt seem right to have to give it that much rudder to keep it straight, no way I could hold it in a straight line in a runway situation, let alone a lake to take off wherever I want to. any suggestions? the pictures are of the plane without the landing gear on the tail area of the fuselage is cut at an angle to drag behind.