I don't know.
Atleast 855 has decent fleets to begin with whereas 61's fleet
keep hanging on a balance with full day bendies converted to
splits, slowly to none, and now the conversion of WAB fleets, 4A
down to TRG and 44J the only full day start, MAN A22s unless they
register 2x the speed on the day, If not it just doesn't sound
convincing.
depot x-fer is the only way out then, with WL holding on to so many
citaros now.