12 inches eh? may not fit thru the window.
Great vids showing it's capabilities Elliot, thanx for making them & posting on youtube.
Your tile floor, are the tiles 12 inch square? I counted four tiles for the turning radius.
I'd up the pressure to maybe 15bar for quicker steering/dumping. Great to see you got the "mix" figured out... that's a trick that blows my mind, it's a "why didn't I think of that yrs ago" idea.
...maybe if I was a rc pilot & knew/understood about p-mixing programming.