Been experimenting with changing nozzles, down to 0.25 and up to 0.8.
No problems with either the first time but after a number for prints with 0.8 and 0.4 nozzles I wanted to use the 0.25 again.
(Its actually an 0.2mm from Prima)
Now I cant get the print to run all the way, 1st layer test looks great and so, even printed an 50x100mm which looks great.
But after about half way the extruder starts to click, it get worse then its clogged.
After unloading/loading it work again.
Checked speed setting for the filament and got some success with parts that a just 5mm high but anything higher it bugs out.
Then I tried changing from PLA to PETG (black print is the PLA and the white PETG) but no use stops at about the same place.
What to do?