Flashforge Creator Pro - Extruder is loose?

[EagleSeven]

that's a really clean heat block :-)
Mine tend to have bits of plastic all over them.

I found that when the extruder Temp was too High the filament could Boil
and get on outside of nozzle and block.
That's when I discovered that nozzles were getting Hotter than indicated at printer's display.
And used digital thermometer to get Actual Temps at nozzles.
(averaged about 15 C error)
Then lowered setting for correct temp.

I'm not saying you are having same problem but someone out there may have that problem ?
It seems that many people set and leave the temp Way too High anyway !