Don't know... the motor sounds fine and runs smoothly, but was obviously designed to operate with the fan intact, so I'll finish my 3D print of the shroud and measure the temps again. If it's still an issue (i.e. it melts my 3D prints) I'll just replace the motor, but I enjoy the idea of fixing what's broke rather than just chunking it to the rubbish heap.Those temps sound excessively high for a short period of running, although it may just be a really inefficient unit
I wonder if there is something funny going on in the motor- like a stuck starter switch
-Mark