On a couple of recent posts over at George Dutka's White River Division blog (link at the sidebar), Peter Mumby has contributed features including the CN SWeep type engines. I've got one in HO scale here that sees occasional time out on the layout, so building on Peter's posts, I'm going to feature my model of 7104 this week.
I kitbashed this model many years ago from an Athearn SW 1200 and an Athearn GP9 (or 7), and some Juneco parts that I found somewhere or other.
The model never really ran very well though, always stalling and jerking as it ran. Never mattered how much I cleaned the wheels. I even swapped out the motor from another SW1200 to see if that might help, but it didn't really do much. One day I took it in to Pete's Trains in London and asked them to try to clean it up, convert it to DCC and add ditch lights, all of which they did. Truth is though, that it still never really ran properly even after that.