Penance Good attempt, but make a bit more space on the old memory card.
Ensure the low flow start is not enabled. Don’t move so fast, go from closed, very gradually until you see a drop come out. Just before that is the closed point. If your paddle isn’t against the case you need to adjust it so it is (2 or 3mm Allen key I think).
Then the video needs to show the fully open flow, from a more horizontal angle and I can tell you if it looks good. Mine puts out about 65 ish ml in 10s.
P.S. it doesn’t really matter if you get a tiny tiny flow when cold…