 From 1935 onwards, two engines of this class, WF's 398 and 400, were converted to one-man operation by lowering the coal bunker and fitting one continuous back window to the cab, and allocated to work the Greytown Branch.One locomotive would be kept at Cross Creek during the week while the other was stationed at Greytown, and would swap around when the Greytown engine needed to come to Cross Creek for servicing.Both locomotives were withdrawn on closure of the Greytown Branch; WF 400 in December 1955, while WF 398 remained in service for several months primarily to run the demolition trains and during which time it moved the Greytown station building to Woodside Junction to become the new goods shed there.