All,

Posting this because I couldn't find a solution anywhere to this problem. My search results kept pulling up how it is normal for motors to have windup on the bench, but this wasn't my issue as it happened with props on as well. So putting this out there to hopefully help others that might find themselves in the same boat.

Problem:
Did a minor quad rebuild because I got some Corrison HD for waterproofing.    Took the quad out the next day all excited to fly it around only to have it shoot to the moon with the tiniest throttle input. I did what any normal person would do and tried arming again with the same results. The motors would build up to full power with any input above 0 throttle. All motors twitched on startup and spun up with throttle, so I was at a loss. I tried PID changes, I checked prop orientation. When I connected to the computer, I found that one of my ESCs weren't showing up in BLHeli. This was strange because I didn't get smoke at any point on the build or rebuild, nor had I pushed the quad too hard.

I checked the and pin out connector on my 4 in 1 esc to find that one of the pins on was bent down. I then carefully went in with a needle to bend it back up and now it is as good as new!