I have two crashes with the same oscillation. Thanks for posting this because I've had a hard time finding others that experienced the same issue. I have two crashes that demostrate exactly the same back and forth oscillation until the unit loses control then crashes. I can post them later but I'm in the middle of a job right now, but wanted to get to you as quickly as possible. We ended up replacing our wookong system completely, going to the V2 IMU, which is the big factor. We have had no oscillation problems since, but we have a case for two unexplained crashes, costing us a great deal of money in repairs. Both times battery charge was good, weather conditions, good, just coming home slowly and all of a sudden oscillation and crash. We are attempting to get some compensation for this. You may want to as well.
Jack Tunnicliffe.