It would be a great idea if the two of Class 221 Super Voyager units 221136 and 221140 could regain the carriages 60986 and 60990 from Class 221144, and they'll become 5 carriages again during the refurbishment. After the two Class 221s are withdrawn from Grand Central Trains for short term lease, Class 221144 could regain the carriages 60994 and 60794 from 221142 and 221143. This will result the three units are in the correct carriage formations and 221142 and 221143 will become 4 carriages and they will be stored away for now. And 34 Class 220 Voyagers will be refurbished first, and after that, the 36 Class Class 221 Super Voyagers will be refurbished as well.