OK. For those who wanted to know, which is probably very few of you.
The old flocking is hard to get off
I tried solvent. Did not work
Tried sanding. Difficult profile.
But sandblasting lightly does work. Very lightly
Once you break through the flock surface, what is underneath sands very easy.
I have both prepped and in my car. I will hand them off on Monday. But then I go on vacation so I won't get them back for two weeks.
We talked about the different pins. Original used a hole records the top with an offset pin. The new version has a second set of holes an inch lower. This allows straight pins into guides.