lol...i will attest to this...
btw....
the secret squirrel tricks for sicce pumps are this;
first off, make sure the air line is attached..
second, blow down the air line,
third wave your hand in front of the inlet.
also as you found, twisting the pump body on the volute back and fourth
will change the magnet 's orientation slightly and cause it to catch.
all in all though, with that impeller/volute combo, you shouldnt be having too many issues,
also sicce pumps to tend to need a bit of "wear in" time before they get to optimal efficency/stability, like a couple/few weeks.
so things should be good here, but lmk if u still have issues, we'll work em out.