Mad Mick wrote:For the pickers with a tap & die set, you can thread the top of the pin chambers, then block off with grub screws. Makes it very easy to change a single pinstack, or insert a security pin in a single stack.
Use short screws or only insert a small way. If the screw goes in too far, there is a possibility that the spring and pin combination willl be too long to lift to the shear line.
If it ain't broke.....pull it down and see how it works anyway!