I have a Taz 5 with a Dual Extruder v3 and Marlin 22.214.171.124. It has been working fine so far. However, yesterday it stopped about 20 minutes into a print with a warning on the LCD regarding Thermal Runaway. I tried again today, same thing (this time after about 13 minutes). I am attaching a screenshot from the OctoPrint temperature graph. T0 (red) is set to 230º, T1 (yellow) is off, bed (red) is at 90º. From this graph it seems that at some point the thermistor goes crazy. Any ideas what might be wrong and/or what I can do to fix this?