Vic makes a hawkbill shaped pruning blade that fits across from the main blade, and the cap lifter (no confirmation on if those two pruning blades have the same pivot shape, but I believe they do.) You might be able to get a hold of one of those, and reshape the hawkbill blade with a Dremel into a pen blade.
Syph007 gets them onto 93mms somehow, maybe try PMIng him about it.
Hopefully someone more knowledgeable will come around. Good luck with your mod!