Anyone ever repair brush nocks or have any information, other than pictures, about them?

You mean the nels grumley tips?

yes, that style but only about 2-3 inches in length.  
The bow that I have is made by a gentleman whose last name is Darr, from the Richmond VA area.  It was made in 1997 and was sold at a reneisance fair.  
The nocks are black walnut, obviously epoxied to the limb tip, which is osage.  It seems like an easy enough repair, but I don't want to do something stupid, since it is my 1st at brush nocks.  Like anything else that I build as of yet, I am not charging for the repair.  I was just impressed that the guy had an osage orange self bow with brush nocks.

Ben, did the walnut just delam, or is it more serious than that?

There was not damage to the osage or the walnut.  It just delaminated like you said.  I figured some Urac 185 and some pressure would work just fine for the job.

Sounds like you got a plan. Be sure to sand the area where it goes back, not enough to remove any wood, just clean the old glue off, do a dry run to make sure it fits right, add Urac, take two aspirin, check it in the morning. Sand off the access glue, refinish, bingo, all good. You'll do a fine job, you alreeady did it in your head anyway.

BTW, since the string groove it already cut in it, I assume, be sure it goes back in the same spot so your string lays right. Keep some light pressure on the sides as you add downward pressure until it sets a bit. You can feel it.

Thanks for the help, illpost some pics.

Look forward to it