Thanks, I will order the coupler, I am still trying to understand the instructions, but I am sure I can figure it out, By the way, what is the tightest radius the new double headed engines will make when coupled?

I guess the big question is, how do I change the front coupler?

I have put together a rather long circus train for my Granddaughter and it is starting to have trouble pulling, is there a way to double head 2 of the Emmett Kelly 4-6-0's?