That's a lot of ifs, buts and maybes!
Lets look at a lot of ifs, buts and maybes as there may be ? or may be not a solution ?
Pretendolino to GWR not TPX
GWR release DMU's as per RAIL article ( best guess 3 class 150's and 3 class 153's ) in reality 3 3car trains to Northern.
Northern stop using the 3 sub leased 3 car Class 185's and they are returned to TPX.
TPX don't need the Pretendolino IN SERVICE as it has 185's.
The above fits BUT there are a couple of problems.
Firstly WHOEVER uses the Pretendolino as it was designed to run as 1 set, it only ever had 1 brake van AND 1 wheelchair coach with toilet (TSO d)
I think ALL trains need to have a brake van AND a wheelchair coach with toilet in order to run ???
It may be possible to sort the former but the later will be more difficult IF the train is split into shorter lengths.
Secondly TPX need a train for 68's to pull in order to train drivers, as it is NEVER going to be used in service what would it need. Use charter stock mid week ? Stored coaches that have their running gear checked over or overhauled ? it does not mater what colour the coach is painted or what state the interia is in ALL it needs is a train.