PLA printing: PP3DP Up plus 2 extruder stepper motor cooler

*Now, after several hours of continuous PLA printing (approx 7h @ 27 °C / 81° F ambient) with my PP3DP Up Plus 2 3D printer and a lot of PLA failures due to clogging (by PLA overheating) in the past (with software v2.11 and v2.12), I am now able to print (3rd-party) PLA flawless on the printer (have not tried the PP3DP PLA yet).*

After a pretty decent clogging with a boiling extruder stepper motor (due to heavy overload), a slightly damaged extruder gear and melted plastic parts I decided