warpsflyer:

Confirmed with engineering the thermo-probe (EGT) is most likely grounded out. It is acting as it should when this occurs. Email me your turbine serial number and complete shipping address.
When forming the curves of the new EGT, DO NOT USE ANY DEVICE OR TOOL WITH SHARP EDGES. . .Use only round items like the shaft of a screwdriver, drill bit, dowel etc.

Eric