All has turned out!!!!!!!!
On average RPM more problems are not present!!!
It is a shame to admit, but the reason was that I to make the engine lean TWISTED(clockwise) Low speed Needle...
And you see I even translated the instruction on Russian for our site - www.rcdezign.ru. What carelessness!!!
Now the engine works stably.
High Speed Needle: 1 1/2 turns out
Low speed Needle: 1.5 turn open from full closed
Regulator : 0.85 turn out
Best result 12x6 - 13500
12x8 - 10150
Even at elimination of bad tightness Back Plate Gasket (with the help sealant) the compression has raised(increased).


At me three more silly questions:

1. The low speed varies 1900 to 3300 RPM.
It depends on a mode with which I has passed on low speed.
And should be?

2. Push Rods+Tappet Adjusting Screw Set In the bottom position (when not this, and other valve is open) have strong (0.5 mm) palpation(luft) to the left - to the right. In the top position of it is not present. It is normal?

3. And why there is no helicopter version YS 63?

Beforehand thank for the answer.