After getting off to a promising start, I started to notice that the extruder was clicking as if the drive gear was slipping and not pushing the PLA filament as far as it should. (Post mortum examination of the PLA shows grooves and gouges from the drive gear.) At the same time, I could see that less plastic was actually emerging from the nozzle. Then, plastic was starting to ooze out of the heater block at the points where the nozzle and throat are screwed into it. Not a lot, but enough to indicate that pressure inside the assembly was building. Eventually, the nozzle clogged completely and stopped working and I turned it off. The temperature was between 195 and 200 degrees Celsius the entire time. I am using the nozzle, PLA, and other parts that came with my kit. I have not made any customizations of my own.
Any ideas about what might be causing my problem? Thanks in advance for any suggestions.