Help! Best String To Wrap Around Bridge Saddles?

Lava

Supporting Member
Jul 14, 2014
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El Paso, TX
IMG_3033.jpeg
 
There are, they're just rusted a/f. You can only see 2 in the photo (right under the E and A strings), the other 2 are probably obscured by the intonation screws holding each saddle.
Why not unscrew the bridge and clean it up? Shouldn't be too hard. Could always coat or paint it afterwards.

Also, how's the working? I've actually done something similar. Added an extra top string without changing the bridge. Strung the thinner string inside that bead hole and filed the saddle. Works fine.