Andrei Macaveiu

The fan has an arrow showing the air flow direction, this arrow should be pointed towards the printed inlet assembly (in this case the fan sticker is inside the printed part)

For the Mosquito hotend the bottom two screw holes are used instead of the upper holes (from the pictures)

If you have round holes instead of hexagonal, you are using the wrong tutorial, jump to the next chapter: 10. EVA 3.0 Heat Insert Assembly

It's easier to cut the wrap at the middle of the rod and just pull the two halves apart