On a large PLA print, 24 hours, I had PLA leaking out on to the top of the nozzle heater element. It eventually ran around the side and dropped off in a glob onto the print. I ended up with 5 or 6 of these globs on the print. It did not ruin the print in this case, so was more of an annoyance.
Is there a way to fix this? Is there an exploded view of the nozzle that shows how to safely disassemble it? If I can figure out how it comes apart without breaking it, I can try sealing it up with some Teflon tape.