Never experienced the flex on audition.
Yours may not be burned enough.
Treble is in more amount but it was on borderline to brittle and adaptive treble.
Soundstage is wide, tall but pseudo deep due to laid back mids
i had them for months, even though it sounded better than initial out of the box, but not by much. besides, to me if an iem or earphone have to go through a process of 50 or 100 hours of burning in before it sound good, then it has no business staying in my home. they should be sound good ootb and get slightly better after burn in (and not 50 hours more, I'm talking about just a few hours tops)