I know this comment doesn’t help your extruding problem but, do yourself a favour and stop wasting your time.
Buy another printer preferably from China because, that’s what the V3 is.
A Chinese machine with a fanfare of the Lord Mayor’s Show.
Try emailing Eaglemoss or the Dbfactory and you will be directed to an automated hyperlink.
The Vector 3 is Not Fit For Purpose.
I am taking legal action against Eaglemoss.
Makes a great door-stopper though!