I "acquired" a Marbles S2 tang sight w the intention of putting it on my Savage 1903. I realize now that I don't know a whole lot about the function of the Marbles sight. Hoping someone can chime in and enlighten me.

1. The pivot joint between the base and the sight is quite stiff......supposed to be that way?

2. Can you disassemble these for a thorough cleaning and check-out wo screwing them up?

3. There's a part between the base the pivot joint that can move around...looks like it almost has what looks like a gear tooth on one end. What is the purpose / function of this piece?

4. Both sides of the pivot have what appear to be discs(?) w flats on them and also have cam stops (?). I assume these are used to adjust the travel (amount of rotation) between the down and up positions?

5. Finally, anyone know of a good source for reasonably priced apertures?

Sorry for all the questions. Thx in advance for any info / help.

RA