Ya, 5bites, you and I use china markers, mass marketers?...... Don't know. That's an extremely strange place for a blank to break, especially 2 in a row. Generally speaking, if a rod breaks within a week or 2 of purchase , it's most likely a manufacturing defect. If it breaks several months down the road, its most likely user error. I still highly doubt that those rods had metal winding checks. Just my thoughts. There are people out there that are so highly tuned to blanks mechanics, that upon their testing can tell EXACTLY why that that blank broke where it did. I, unfortunately am not one of those people. I guess all we all can do at this point is speculate. All I fish with is my custom builds. All have as many as four metal winding checks. None of my rods have ever broke.