we have now unfortunately discovered that the threaded spars have different heights, sometimes 1.3 mm, and are therefore outside the tolerance (see picture 1).At the top of these spars there is still a paragraph to be seen (picture 2). If the spars are ok, this is not or only minimally present (picture 3).As can be seen in picture 4, this means that we have different heights of the brackets. Therefore it happens from time to time that the brackets break during the installation at our customers! We still have 76 pieces in stock. Please tell me what we should do with these parts.