Thanks guys for your input. I have one other question. My OS 70 Surpass is dying. When I flew it today it started surging and making some knocking noises. This engine is about 16 years old and it spent about 10 years in my parents barn when I took an absence from the hobby. Anyways after I landed I turned the engine over by hand. It felt very rough and didnt seem to have much compression. I think I'm gonna just buy a new Saito for it but I am unsure of what size to go with. I need good power to take off from a short rough runway. Thanks guys.