Thanks to all who replied, I found some at Rusty Wood, and I just happened to have bought a pistol from them this week that cleared transfer already, they threw the pins in the box with the gun and shipped this aft.
I thought I had another die with the pin but nope. I contacted Higginson and they did have them as well. Bought a few spares this time just in case.
Be cranking out 9mm's again next week