Nice; I have the same, but reversed problem; bought an Incra V27 miter gage and it won't fit into my ancient Craftsman 10" contractor table saw, cause the slots are too narrow and I never thought to measure this first, duh!!
Since the saw is packed away in the basement, I have some time to think about how to fix it.
1) Buy a real saw, to go with my new to me Excalibur high end fence
2) Mill out the table slots, leaving the side closest to the saw true and original
3) Make a new mitre slide by cutting down a standard one - already bought one so that may be the best option.
Thoughts from the experts?