Small update, installed the PWM regulator, previously suggested by @spkesDE 
and it works very nicely.
Finally I have no chainsaw in my HP23 
I just de-solders all connectors from regulator, to keep it tiny. If you will replicate my setup follow the wire colors (I believe it would be not compatible just by connecting directly to the connector.
Also how to setup that PWM regulator, is very nicely described here : https://www.youtube.com/watch?v=NBcCFYZhU_0
I will not post the temps now because :
- I keep running on lower maximum RPM
- I’m running crappy RC9
Yeah and one more thing - I placed controller over the antennas for US market (because it’s not used in EU)
