Ender 3 v3 SE upgrade hot end problems

Hi All

Been printing fine but thought I would upgrade the hotend. Purchased from Amazon ( official) Creality part.

Installed fine but will not lay the filliment, tried to manually adjust the Y axis with the paper method.

Carried out a calibration, just looks like hair on the bed.

Any advise greatly Appreciated

Thanks

You should be looking at the z-offset, I’ve found it normally needs another 0.05/0.1mm after the levelling. I’ve never used the paper method on my V3SE, always used the autolevel. What I have found since I have upgraded to the microswiss flowtech is that the autolevel is all but spot on.