Hello, there. We're sorry you had a disappointing experience with our rivets. It sounds like you've already returned the rivets that did not work, but please know in the future that we are always available to troubleshoot with customers by phone at 800-776-2228, by email at customercare@arrowfastener.com and on social media. If you experience similar issues again, please contact us and we will find a solution with you. Thanks for giving us an opportunity to address this. -Your Arrow Fastener team