That center pin was difficult for the final assembly people too. Later in the 7000 series life, manufacturing engineers identified as many Peltola GND sockets as possible that could be rotated for better visibility of the center conductor. Any time a board was in revision for other reasons, the mfg engineer would press to have the socket reoriented or relocated for better visibility. You can see the center conductor during insertion on many of the later boards by looking through the split in the GND portion of the connector. A keen eye, a flash light and a very flexible neck can help you avoid missing the target.
Another failure is loose braid that touched the center socket. Considering the quantity of connections and unit cost of a few pennies, the margins more than covered the rework expense. A simple looking invention that probably made millions of dollars.
