Are you hand launching the plane at full throttle? These "pusher" type motorized gliders like the EasyStar should be launched at no more than 50-60% throttle. Because of the thrust angle of the motor, the plane will dive momentarily at full throttle. I have an AXN Floater Jet and fly with friends who have EasyStars and Bixlers. They will all nose dive at full throttle until the wings find lift, some more than others. The AXN Floater Jet is the most notorious for doing this. Try launching at 50-60% throttle. You'll be surprised at the results.