So the answer to the question "Which Tusq saddle for Yamaha FS700?" in this case is Tusq product number PO-9276-CO TUSQ 3" Compensated Acoustic. The numbers as they appear on the label in Fig. 1 are:
|Fig. 1. Tusq Saddle Product Info|
|Fig. 2. Tusq package with original Yamaha plastic saddle|
Fig. 2 shows the package with the original Yamaha saddle, which is much rounder along the top than the Tusq saddle. Not sure if you can tell from the rest of the photos, but the ridge along the top of the Tusq saddle is pretty defined.
|Fig. 3. Tusq saddle installed|
Once I installed the saddle and restrung the guitar, I realized the ends of the saddle are pretty pointy. Against my better judgment I rounded both ends with a small file. I should have removed it to do that, but I didn't scrape the bridge (which I was almost sure would happen), so no harm done. The ends don't look great, so next time I change the strings, I take the saddle out and round the edges better.
|Fig. 4. Bass end after filing|
|Fig. 5. Treble end after filing|