I just bought a new DLE 55 from Tower Hobbies along with the Reactor 1.60 (50cc). Everything was built and I was ready to start breaking in the engine... The motor started right up and had a good idle... When I throttled up to 2500-3200 rpm the normal vibration was there expected from a 50cc but when I went to full throttle the vibrations felt like a messager and looked as if the plane was going to vibrate apart... The prop and spinner is balanced, I even took the prop and spinner off my Ultimate with a DA 50cc and tried that prop and spinner and the same vibrations were noticed... My question is.... Would timing cause the bad vibes? Or would the crank be out of balance? I just want to eliminate all possibilities before I send the NEW engine in for waranty work... Any and all help would be greatly appreciated... Oh and by the way, besides the vibrations the engine runs great and transitions great from idle to full throttle and back to idle.... This engine is a Beast!