Apparently mine are the correct ones just without an accurate inlay in the packets.
Stuck them on, sound great, but it's like playing with rubber bands. So I've asked for more, higher gauges.
They do sound great though, so I'll persevere for now.
EDIT: I did speak to them on the phone for the original order as well as after the first couple missed turnaround dates, but it was getting to the point I wanted all their replies in writing.