Hi Vector,
Your Fathers dob is supposed to have those teflon pads.
That roller bearing plate set-up shown in the instructions is for the 12" GS Dob only. All the other models have teflon pads.
Be glad you didn't get the roller bearing set-up as you would have thrown it away like almost all of us 12" dob owners did!
I replaced my roller bearing set-up with good old 'Teflon pads'.
Gonna use my Roller bearing stuff to make a swivel Binocular chair!
About all it's good for.