I did once,but after that I was told it is against store policy when I mentioned it the next time I when in. Literally no exaggeration right now I have six out of the last dozen them. Either way it's probably a good time to get in there and mention something to the distributor as a solid favor to your customers. It's really discouraging and annoying, and not to mention I'm broke and buying one at a time. If it made a difference, I would open them at the store.
It is not uncommon to come across one or more defective coils on occasion. Even the best made ones are not exactly the most well built. They can be damaged in shipping or being dropped. If it happens again you should bring em back as soon as you notice.
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