"Thanks for the response Randy.
I won't rule out sync issues however I have spent many hours working on sync issues from when I had my hex with the same motors and esc's. I switched all of my esc's over to BlHeli firmware from SimonK along with…"

"Randy,
I wanted to post to this the other day when it was first posted. Could the issue I had here: http://diydrones.com/forum/topics/arducopter-3-2-beta-testing?comme...
be the same thing or related? Mine happened when turning EKF off and I believe…"

"I am running blheli and haven't had any sync issues ever since switching all my esc's to blheli and changing motor timing to high. I have done quite a few hours of bench testing with it strapped to the table and couldn't get it to go out of sync. …"

"I still have rc9 loaded on mine and reset everything and tried auto tune again. It did about the same thing it did to me before. It finished the roll tuning just fine, as soon as it started pitch it tipped the front way too far and started going…"

"You should also check the vibration levels coming from the new motors. Do one at a time. You can get an app for your smartphone which will check vibration levels. Tape it firmly to the arm of the motor you are testing. You might have an out of…"

"I know it doesn't help if we don't provide feedback and I wanted to do some more testing. I still have rc9 loaded and so far plan on keeping it on there but leaving ekf turned off for now.
I did a test flight in stabilize and poshol with ekf off.…"

"Randy,
I couldn't hold back and flashed rc9 again. This time making sure I got the correct tones after the firmware flash. I haven't tried and probably won't try anything with ekf enabled for a little while but it is flying remarkably well. When I…"

"Thanks for the reply Randy. The sound I heard when I flashed back to 3.1.5 was the firmware loaded successfully and the one I am used to hearing when flashing firmware. The sound I heard after loading rc7 the one time I had an issue was the "startup…"

"Isn't it down and to the left to disarm? "

"Not sure what happened to the audio in that video. Here it is again with the audio working.
https://www.youtube.com/watch?v=PLEWFhHJVCo"

"I just noticed something else and I don't know if it has anything to do with the issue. When I flashed from rc7 to rc9, after the flash it plays the musical tones. The tones sounded just like it does when booting up. I flashed back to 3.1.5 and the…"

"Here is a link to the video from the gimbal camera: http://youtu.be/OwWnn3woRCo
You can tell when the ekf was turned off and immediately made a hard right front turn."

"Randy,
If you get a chance can you please take a look at the log I have attached. I loaded rc9 onto my Disco tonight when I got home from work so I could test it. After I flashed it I confirmed all of my settings were still good and also enabled…"

"I flashed rc7 back onto my TBS Disco. I wanted to try the auto tune again. I took off in stabilize and flew a little bit. Checked alt hold and loiter modes were working good. Flipped it back to alt hold and proceeded with auto tune. It finished the…"

"Not a problem. It took me a little bit to find it but I remembered seeing the drag and drop box when I setup my quad on there. Just couldn't remember where it was."

"I did auto tune with 3.1.5 and all went well. Landed in alt hold with auto tune switch still on and disarmed. I then turned the auto tune switch off and re-armed. It took off in a hurry to about 2 feet and flipped over right on it's back. I had a…"