Missing Gravel Hopper

I am missing a "Gravel Hopper" when trying to do the Gravel Run Scenario on IIR OVRII-011-61from Terry Eshom,
Any ideas?
Geoff
Any ideas?
Geoff
https://www.railworksamerica.com/forum/
https://www.railworksamerica.com/forum/viewtopic.php?f=29&t=7897