Yesterday I noticed some wobbling even on a slow descent. I thought that maybe it was wind. Did the usual stress crack check and, low and behold new location. I was very happy that the glued seams on my arms kept all further cracking in check by providing lots of strength in that area. It worked since flight 24. But now at flight 68 comes in cracking at new location. This one just about leaves the motor with lots of movement. A disturbing amount. Enough that I'd say a full motor loss could happen. Gluing is in process as I write this. If it does not work, serious work will be required in that area. I will update on the results but I don't have a very good feeling this time around. I honestly thought that all we had to deal with on the phantom 3 was the two side by side screw holes. Nope. Motor mounts are also a problem. I do have a spare, brand new phantom 3 but I will not use that one until I know exactly what I need to strengthen before flight 1 happens.