NO dead sticks anymore,well I just fllew the TopCap today and its just getting better and better<i was hovering the plane about 3-4 feet from the ground,And Im just starting to hover.I would not do that if the engine was not running right.

It does take a long time to break in ,Probably close to 3/4 of a gallon, but after that,and proper tuning thay are AWESOME.I'm not having any problems with the Heli head,it does help keep it cooler,P.S. I live in PuertoRico(90 degrees, :sunsmiley 90%humidity)