BPS Tungsten Quick-change Spinnerbait?

Has anyone used one of these? I bought one last week and used it this weekend. I loved it. 1/2oz with almost a 1/4oz profile. I put on a custom skirt and custom blades. The quick change was awesome and the profile was exactly what I needed this weekend. The profile was small to match the shad and the extra weight helped it get down several feet to where the bass were.

But then there was a problem. I caught several fish in a pattern. So when I moved from spot to spot, I checked to see that the blade was screwed on tight. It was. Then I got back in a cove and caught 5 pretty quickly and I didn't think to check the blades. On the fifth fish, the quick release came off, and all the blades. Is this common? I hope not because other than that, this was the best spinnerbait I have ever used. Thanks for your replies.