So having swapped out the thermistor and renewed all the wiring up to the main umbilical connector I got fed up with up with this print head's thermal run out issues even having tried the silicone hot end cover and quickly decided its fate.
Happened to notice that IT WORKS sells there own tool heads for the Lulzbot that looked as if it used the same components as the aerostruder and I could put the filament tensioner in a more accessible position and you can download the STL files from the site and see if the parts ran better in a different assembly for me.
Printed them off with some HTPLA Proto Pasta and I recycled the heatsert's from the TAZ aerostruder for installation into the new parts.
A forum dedicated to the stock LulzBot TAZ 3D Printer
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