Nick, have you tried to swap any esc? or even outputs? You can easily swap few outputs by placing ESC cables to different connectors on PowerPDB. This way you can check if problem moves along the connection.
Thanks, Jani. I'm not really sure why, but it stopped happening, eventually. Might be as simple as a bullet connector. Always connections. Now I know everything's in place I can take out plugs and things, simplify and reduce. I finally got it in the air today! Now I have to learn how to fly...and tune. .. and tweak... and balance. .. and program..... It's a wonderful service, Jani. I couldn't have done it without you, but in the making of the kit I feel I could now make my own frame. So thanks for the copter school! I see the Y6 becoming the most popular model, do you have any designs coming for these? I'm already ordering the bits for a Y6, with the frame from RC-carbon.
Anyway, thanks again!