Thermistors in Rumba?
The thermistor that came with the e3d was a casualty of the Great-Filament-Blob incident of 2014…I couldn’t extricate it from the mess of kapton and filament…but I had, like, 5 thermistors included in the Rumba deluxe kit I bought from RepRapDiscount. I’m using “5 is 100K thermistor - ATC Semitec 104GT-2” and it’s kinda in the ballpark…kinda. After multiple PID calibrations, there’s still a lot of hunting to get the right temp.
The other possibility is that it’s slightly too far from the heater, the Thermistor is a larger diameter than the e3d part, and rather than take a drastic step I couldn’t back off from (making the thermistor hole larger), I used the other hole that’s drilled through the block that’s normally unused.