I bought an aerocruiser (crappy cruiser) to teach my son how to fly. The Crappy Cruiser loves to nose dive to the ground. The receiver and engine battery pack that comes with the plane is too heavy. I spent over $50 for a lithium polymer battery and charger to reduce the weight. The plane will now fly, but not very good. I then spent over $50 on smaller servos to reduce more weight. The Crappy Cruiser flies no better with smaller servos than it did with the larger servos that come with it. Now with a lighter battery and smaller servos it flies like it is tail heavy, but when I added weight to the nose it was back to the nose diving into the ground. I removed the added weight and I can fly the plane, but you have to be careful because it is very unstable. I finally told my son yesterday, 03/06/2005, that we will get something else to teach him to fly on and when he can fly then he can try to fly the Crappy Cruiser. It is too beat up to return now so we are stuck with it and i am out almost $300. My Ultimate Bipe is easier to fly and would make a better trainer than the Crappy Cruiser. DON'T BUY THE AEROCRUISER! [&o]