nice solution, I actually did disassemble the whole extruder, carefully bent the spring plate (the locking plate) in a way that it would get the gears closer, I identified that in my case at least the issue was that they were far enough for it to loose grip, after bending the grip is way stronger and just yesterday had a 13hs print (of around 400grams of PETG), and it went with absolutely no issues. I've ordered the new revision of the extruder though but I think I'm not going to touch much unless it bothers again.
