The current swap project has made very obvious that I should have thought out my smaller sled fence. I can really save some time if I have multiple stops ;-(
Not wanting to stop to make a new fence I instead took about 30 minutes and knocked five of these out. I don't need five, that just happened to be how long the scrap was ;-) I milled a piece of scrap, straight grained oak to 1" x 1" x whatever it was and cross cut pieces 1-1/2" in length and 3-716" in length (make the longer length to suit your needs).
the "in-close drill press holddown comes in handy.
Without changing the DP setup I drill a counterbore to accept the bolt head.
A piece of scrap with a hole drilled in it acts as a pivot jig for the disc sander. This knock the corners off and assures pivoting clearance.
A bolt and a nylon-insert lock nut and it works like any other flip stop.
The fence pictured is not the one with the problem but, I want to go get something to eat so I'm being lazy. These are a band-aid for my short-sightedness on the smaller sled fence. I will fix that more elegantly when time allows. Thought this might help my fellow short-sighted friends.