Thanks guys, loctite sounds like the plan. One problem I had with superglue was the design. The horn stuck out beyond the bow so when stringing was the only thing in contact with the ground. The other happened not on my watch so I can't be sure. Your answers give me plenty of confidence.
Pearl, both of the problems were with horn on wood. If that means another answer, I'm listening. I used good hide glue without problems in the past, but was wondering about a faster glue.
Thanks again for the help.