Hello, Thanks for writing a review and we’re sorry to have learned your issues. The adapter or end hose interlock/connection that is included with the hose kits are for the newer model vacuums, you will need the old end hose interlock if you own an older model RIDGID vacuum. If you no longer have the old hose to get the old end hose interlock/connection, we may send one to you at no cost. If you need one please call our Customer Service at 1-800-474-3443 from Monday to Friday between 8:00 AM to 5:00 PM Central Time or send us an email at info@ridgidvacs.com and we'll be glad to assist you. Thanks, RIDGID