I was going to buy a new set of couplings and replace it, simple. But hold on, I am supposed to be making my own things these days so I had a go. I took an off cut of 2mm brass sheet left over from the last build draw around the old chopper and set to it with hack saw and files. A short while later I had something that I was I was happy it resembled the original. A bit of black paint later and hey presto, fixed. I would have then put a small bit of brass in the lathe, made a spacer and soldered it on, but as I have no lathe at the moment, a bit of fuel tube as a spacer works perfectly for now.
I found this in the bottom of the box

So I fettled this

The new...


The original on the other end of the wagon...



