Some members in this forum are reporting stress cracks on the new shells. One guy has sent his to DJI 3 times for the same issue.
I just sent mine in for the fourth time. I had 222 flights before the first cracks appeared. Since I have had 8 flights, 18 flights, and 11 flights when cracks appeared. Pieces of plastic have fallen out, the shells separated, and the gimbal was returned to me with a warped bottom plate.
My biggest frustration, though, is I can't get DJI to recognize that this situation is an on-going problem that they need to rectify. The last two times they promised to expedite and escalate, but if anything, the service was slower.