[redmodelt]

Ok so I did take a look at the Service Bulletins today;
Pg 249
insert carrier support through bracket, locking in its place with castle nut and cotter pin.
Page 508
(after fitting the wheel so it fits down in the well, remove carefully as not to disturb setting)
After removing wheel securely tighten the A-21894 flange nut.

Nothing in there about leaving anything loose.