You are not likely someone who deals regularly in QC (Quality Control). If this were bad QC then we'd see a lot more of this issue. Just by the fact that this thread is over a year old and has only 26 posts, tells me that this is an isolated incident. Consider not only the hundreds of thousands of HRVs manufactured every year. Just think about the nearly 11,000 people on this forum. If this were bad QC or a prevalent issue, this thread would have had more action. Any time you have mass manufacturing you are likely to encounter an errant defect. It could be the assembly line worker who didn't push quite hard enough that one time because they had an itch and a connector somewhere wasn't quite tight enough. Did it pass QC? Yeah, but in transit, or with use, that connector came loose. It could be just that one random manufacturing defect. But overall, I'd say the QC is pretty good on this specific area of the vehicle. Does it suck for those experiencing it? Yes!!! But, not a huge QC issue. (Stepping off my soapbox now)