they're symmetrical blades(plastic, heavy) and it is heavy(tail mod,heavy duty skids)...but it was flying around good last time I flew it with the same set-up....is there an easy way to check those 4 in 1 units? I know NOW how you can keep feeding $$ to these helis....I will double check the gear mesh........it'll get a short burst of power from the start..(cooled down)...then wean right out... I'm sure the 3 cell li-po probably takes a toll on the 4 in 1.....................thanks for your reply.............[8D]