If the saddle is removable, you can buy saddle blank material at StewMac.com and fabricate a replacement yourself.
I did this - bought Micarta material in the same thickness as the original saddle, traced the original saddle onto paper, used that tracing to sand down the replacement, keeping the original saddle pristine (a VERY good idea). It takes a while to shape the replacement but it's a very inexpensive way to experiment with saddle heights. The goal would be to reproduce the original saddle's contours, but at a lower height.
Note: reducing the height of a saddle can be done by taking a smooth piece of material such as plate glass or a marble slab, gluing sandpaper onto it, then rubbing the base of the saddle material back and forth across the sandpaper. Sit a block with a square edge next to the saddle while rubbing it back and forth to keep the material at 90 degrees to the sandpaper.
Here's a link - either Tusq or Micarta can be worked easily enough to do what you want.
http://www.stewmac.com/shop/Nuts,_sa...e_saddles.html