On Tue, 05 May 2020 20:47:38 GMT, lid (AnthonyL)
wrote:

snip

I've since bought a mini-pump but the "nut" fits inside. And now I
discover that the old fashioned pump would have worked fine!

I thought it looked 'ok' from the pic but wasn't sure if you had lost
the runner insert?

And you know the idea of that pump is that it mounts inside the frame,
in front of the seat post (I think).

Cheers, T i m