FWIW the 365s are having a fair few problems now, although they may not be reported because the issues rarely take the train out of service.
The doors are quite often not locking properly (with the hustle alarm getting stuck on, and obviously no interlock), requiring platform staff to give them a shove and if that doesn't work then the driver has to get out and have a go. And if that doesn't work, as has been the case a few times, then the driver needs to get on and pull the doors closed and lock them out of use (much to the annoyance of passengers in the vestibule who are now on a packed train and can't get off through those doors anymore).
On top of that, the driver now has to squeeze through to get off at another set of doors to go back to the cab and proceed.
This is no doubt causing a lot of 2-3 minute delays that have knock on effects.
I believe the cold weather may have something to do with the increase in problems, and if that's the case then look forward to fun in the next few months.