RocketRider7 Thank you! This is exactly what I was talking about. I've ordered one. I'll keep an eye on it and change it out for something else if it seems like the dropout inserts/bolts can't handle the stress.
Andrew R Stewart Papa Tom it's the single leg center-mounted ones that were giving me problems, if the above solution doesn't work I'll go to a center-mounted double-leg.
elcraft I wish I could add a braze-on but sadly I don't have access to welding equipment.