I took a good plate out and layed it on top of a plate out of another
old tuner . The flat side & hole were the same so i lined that up and
traced around the arch with a sharpie . This should work also on a new
piece of aluminum stock .
Cutting was done with ordinary heavy scissors then touched up with a
medium file . The shaft hole was redone to fit the tuner . I used an
exacto knife and a file . The hole needed to be 6 sided .

OOps i forgot to put the mouse biteout on the rest of them .