Perhaps Scotrail should insist that the other Wabtec factory in Kilmarnock is brought into the equation to modify the coaches.Absolutely correct and much more concisely put than my attempt up thread.
Contrary to the "it's all Wabtec's fault, Scotrail should give them a kicking" viewpoint expressed by many, I can envisage a situation where Scotrail (who don't have a realistic rolling stock alternative) are desperate to continue with the conversions while Wabtec are reluctant and may want out - but that's just more speculation. Either way, it's not happening in the timeframe required and ScotRail will need to get inventive to find a way forward. Loco hauled redundant EMUS anyone?
This factory was after all responsible for the last refurbishment work on these coaches when they were with Great Western.
It would also keep the work in Scotland too. Reducing the unnecessarily inconvenient trips to and from Doncaster.