The length is fine

The orange dot is just about where the string will come off the saddle

So, pretty close. The saddle will adjust forward enough to make it just right.
I made the jig, but just a one off, as my subconscious hasn't gotten back to me yet.

Take the distance...
And then

This is that Aztek material I used for the router sled.
Here's another of those stick on LED lights.

I love them

One on each side of the drill press.
I need to see