@20ffb98d @5756e48c Oh, I didn't measure it, that was a handwaving memory.

You are right, they look like 2510. Just went and measured one.

And yes, I finally understand that they shipped two hot ends and one fan with the printer, but that replacement hotends ship with a replacement fan. 

 @2c1a2dac @5756e48c If it is a 2510, that would explain a lot about the creep. These fans tend to be quite underpowered compared to their 3010 cousins, and due to how it's mounted, you're not even getting the full force of the fan over the heatsink. 

 @2c1a2dac @5756e48c I even checked: Gdstime 2510s get 2.45 CFM, while Gdstime 3010s get 4.7!