Judder on Takeoff/ Driveshaft Carrier Bearing/ Mounts

[ngoma]

Trying to troubleshoot a judder in reverse (M46).

Some is probably attributable to the cracked front crossmember but I just checked the driveshaft and found the center carrier looked suspect. Isn't that rubber collar supposed to be further forward? Set into the bearing sleeve?

Also, the driveshaft appeared to be able to move too easily in the center carrier. Should I be able to move the driveshaft around there with finger pressure?

(photos from the rear)