So far, so good, the new parts arrived this morning, I didn’t bother replacing either the thermistor or heating element as yet but I did fit the silicone cover to the hot end.
Previously, anything above 15% fan and the nozzle would start to lose temperature, after 5 degrees it would trip the thermal runaway warning.
So far, it’s been printing for just over 2 hours with no issues and I have the cooling turned up to 25% but I’ll increase that slowly (+5 degrees) every hour or so and check for nozzle temp stability before I restart the wait before increasing it again.
I could bump it straight back to 100% but I want to ensure that there are no other issues and that it finishes the current print, so steady does it.