Well Warbonnet it might make a difference as because sliedh gullion was handed to the UTA it was insured a longer life which gave it a chance to be preserved. I believe if more locos had just managed to the late 60s they might have been given a chance due to RPSI railtours.Also at the end of the 70s it was recoarded that some locos had very low scrap value which would have made them much cheaper to purchase by the RPSI or UFTM