I have now been riding the AM831 4-5 times on trails and it fells nice. I haven't jumped or pushed it hard downhills though. This weekend i rode with my son and we pedaled uphill on a road and he said, "Dad, it looks like you have a tail, its wiggling, I think you back wheel is loose".
I stopped and checked the wheel, everything was tightened but when I took the wheel in my hand I could flex the rear triangle a lot. I felt his rear triangle and it was stiff (LCFS911) and my wife's rear triangle was also stiff (LCFS713).
I haven't felt this when riding but it made me feel insecure, can I trust the bike if things go rough. I have done the "flexfix" but I can not imagine that it was even flexier before that. Could i have "flexfixed" it wrong or is the result not better than this.
Made a video of the flex.
Hoping for helpfull feedback