[ChalkLitIScream]

If you have picky ears like me and off tune notes throw you off, its best to do your own saddle work and intonate to your guitar specifically along with your given action.

Tusq blanks should be available at your big guitar stores- try the PQ-9000-00.
Or else bone works fine too, though it's a bit tougher to work with. Its fun if enjoy this kind of stuff. Order multiple blanks bc it's a learning experience!

Also, I don't think you can change your string spacing at the saddle, unless you are doing some advanced techniques to cut notches at measured points in your saddle.