Where does one post these issues? I am relatively new to the debugging process. before I used the Bec release with great success. I think it may be a PID issue. As soon as the fan is on and anywhere close to the nozzle the temps drop like a rock without the sock on. I have had issues before with air cooling the nozzle down but the printer could usually keep up and the temp only would drop a few degrees.

I took off the silicone E3D sock heated the nozzle to 210 and then turned on the fan. The temps dropped to below 148 in less than 30 seconds. As soon as the air hit the nozzle it was as if the PID had no idea what to do. With the sock on and the fan set to full the temp drops a little, about 10 degrees or so.