I have both bit drivers you need, out of a Surge. The large ones missing the spring but im sure you could make one fairly easy. I probably could find something to put in for you. What do you have for trade? Not really interested in selling because they're probably worth next to nothing in dollar value. Im always interesting in leatherman tools of equal value. A semi worn out PST or p4 or something like that.
Edit: Wow you're from Australia, probably gonna back out of my offer. Shipping would kill both of us!