[GreenKeys] 100WPM gears for 28KSR

[Timothy Kirkpatrick]

Per W7TTY, George's recommendation, I checked the motor pinion gear 
teeth and the larger drive gear.
The pinion gear teeth are worn down and don't engage the drive gear 
tightly, so that went in the trash. The teeth on the drive gear #163464 
look ok.
So I only have the following gears (100WPM) that look ok:

#163464 typing unit drive gear
#163501
#163452
#163453
#163500
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-tim