sentences:  They had already been allocated fleet numbers which were retained by the new owners but it was only when the ex-contractors' engine No.18 "Ailsa" was officially numbered in 2005 that the fleet had ever been in correct sequence.These railcars have been the subject of much controversy in the late 1990s when their over-budget rebuild was brought to a halt by incoming management and since this time no work has been done on them.