Thanks everyone.
FAQ 35 looks like it will have the information needed.
I am aware of the importance of a good screwdriver tip to slot fit
but thanks for the reminder.
I'll post a couple photos as I go.
My intention is NOT to refinish or remove any original finishes but merely
clean the gun up a bit to make it a little more presentable.
I will be very careful and take my time..
Kind regards,
Jeff