Thanks, Everyone for kind words and support.
There's some errors in K1 Nano package footprints on a few parts. I'm going to review them again before posting a parts list update or board revision. Looks like a few parts have 0603 pads for 0402 parts, which is probably workable but not ideal.
My K1 boards have now arrived in Bkk and I should be going to get them within a few days. I'll need to cut them down before packing and shipping.
Which parts, specifically? I'm hoping to order parts for 20 USB units before the end of the month.