Dear Jim,
Really sorry, I just saw this.. i got somehow banned for bad passwords and no one has ever been able to resurrect me..
The bottom of the referenced page shows some "waterproof DS18b20 sensors" connected to a terminal "brick" connected by a 3-pin cable (to Arduino).
Do you have 5 of those stainless steel probes with the cable with 3 wires on the end? Where did you get them and approximately when??
Let's try to figure this out...
Regards, Terry King
...On the Mediterranean in Italy
terry@yourduino.com