Vents are a 3D item, and a customer can remove them from the designer but there is not a line item to make the shop aware of them being removed. There is a workaround that only works if the customer finds it, under exterior options I have a "No Vents" line item. But you would have to know to mark the line item if the 3D item is removed. Would it be possible to tether the 3D vents to a line item so there is a required yes or no so the shop is aware to remove vents.