Great Pins, some just stuck together

This is a reorder of pins I purchased for the office. They are adorable and will be great for swag as part of our event! However, this batch I had about a dozen that were glues together at the pin backing. a few have glue on the edge with bits of rubber from the back stuck to it or there is a chuck of rubber on the back where I had to remove the joined pins. I think this was more of an accident but it is annoying when it was a large order and some of the pins might end up not being worth giving out to folks because they got ruined. I will buy again eventually but hope the quality check is better the next order.