Anyone else having trouble with the connector blocks that come with the USB-6210? The detach from the headers easily and don't maintain reliable electrical contact even when they remain in place. I see that NI sells a NI USB-621x Accessory Kit that features replacement terminal blocks with screw flanges, but I hesitate to spend 60USD on a variation of a frankly defective stock part. I'm about to test how well plastic zip-ties will help maintain a proper connection, but hopefully others will share their experiences, recommendations, and kludges in the mean time.
