Hi Bill, we understand your frustration. The Hayden vacuum nozzle was the industry standard for many years but others have pasted it up. The nozzles in the Upgrade Electric Powered Brush Kits section here https://builtinvacuum.com/help/hayden/kits.html
all shut down when jammed, saving the belt, and they have no neck breaking issues compared to the Hayden. All the complete hose and nozzle kits fit into your wall inlets. Your wall inlets are industry standard, all Hayden systems' are. Hope that helps, you have some great options now. If you wanted to only replace the Hayden nozzle that will not be possible because the wand to hose handle connection will not support any of the new brushes. You can use the Hayden set up you have as a back up or in the basement or garage.