If no one comes up with something, I would search and/or post at mandolin cafe. I suspect somebody would know a good suggestion.
mandolincafe.com/forum/forum ... and-Repair
As far as nomenclature, the bridge is the larger piece, while the saddle is the smaller piece that the strings actually contact.
The flip side of it is this... if your bridge has issues, you can quite possibly improve it yourself with some online research and a new bridge. I suspect the fitting of the bridge to the top is going to be the most demanding aspect. I have never done that, but I did do a violin bridge when I was a kid, and turned out to be usable. I think that a mandolin is a bit more difficult as there is more surface area. Worst case, if you purchase a new bridge and mess it up trying to fit it and so forth, you are out the cost of the bridge. Depending on your view of things, that may not be such a bad risk. You could potentially learn some handy stuff along the way and end up with a great playing and sounding bridge.
Here's a link to fitting a bridge... doesn't look too terribly difficult:
frets.com/FretsPages/Luthier/Tec ... tfeet.html