Well for me, my driver outputs failed slowly. I have only had one 4 in 1 casualty so far...and
for me, it started toilet bowling (TBE) and then all of a sudden I was rotating to the left.
So I thought I had a motor going bad. I had some new motors in the wings, and put them in.
It was doing the same thing. I had my proportion gain turned all the way, and the trim all the way,
and I still had to hold the stick like 1/4 of the way to keep it from spinning. And one of my
motors was getting hotter than the other...(duh).

Replaced the 4 in 1 , set the trim back to 0 ...throttled up.....straight up in the air...no proportional gain needed.


And that is the only one I have had a problem with. Still going on the 2nd.

Just one man's experience.