Any Moving Iron cartridge fans out there?

It's unclear why the cantilever/stylus pulls in when lowered as when statically balanced with the MM
the Audiomods drifts outwards indicating correct bias setup.
From phone conversations with Len in the past I believe he is in favour of the thread & weight
bias adjustment technique & less other methods.
I seem to recall that the same thing happened with an AN IQ3 cartridge but, as with the MM, tracking
is very secure across the record so I'm not too concerned.
An email to Len Gregory or Jeff Spall at Audiomods would be interesting. I ought to ask
about it.
Cheers.