I have a lulzbot mini with a standard extruder. I just purchased some Taulman PCTPE FIlament. It feeds out of the hot end fine, but it smokes when coming out of the hot end. When I saw this, I immediately turned off my machine. I turned it on and tried it again. it still smoked. I set the settings to pctpe, I set the temperatures to the recommended ones (Temperature: 235, Bed Temp: 100). Is this normal? I just wanted to know before starting my first print.