Micra pick tool
The screws have loctite on them from the factory, so heat them gently before taking them apart. 200 or 250 degrees F is enough. Or 100 to 150 degrees C. This softens the loctite and you can undo the screws with a couple of pairs of pliers. If the teeth are good on the pliers that's better so they don't slip.
Use the pieces you take apart as a template to drill and shape the picks so they fit. Give some thought to how you want the tool to be held when you are picking. Make sure you get the pick to face the direction you want.
I cleaned everything and put it back together with some Loctite. Now all you need is some way to include tension wrenches..