As an update I have everything working on the Eagletree system. The temperature probe was working all the time. I just didn't have the readout correct. It was being logged in the buffer. I was able to play it back and watch it as I started the engine and checked it.
The temperature would sit at about 100 degrees F while the engine was running. When the engine was stopped it would go to about 250 degrees. When the engine was restarted it would return to 100.
This is an amazing system. As an ex aerospace engineer I know how tough it is to get such systems to work reliably. This system records the data at the same time it telemeters it to a receiver where you can watch it in real time and it also can be recorded. All for $370.