Don,
Here is the M28 gear information you need:
Set # Pinion Gear
Page Printer 161293 159278 159279
TD 158029 158005 158006
Aux Reperf 161811 161784 161790
KBD 163023 163021 163022
I have some of these gears, contact me off the list if you don't have
what you need.
73,
Russ
WA3FRP