I'm using the same arrows, but with the Crosspro 100FX heads (aka TruFire T1)...
The inserts can be turned...no heat, nothing...just turn them...they're not loose by any means but they will turn.
Heres one that got away from me (used the 20 crosshair on a 40 yard target
)...hit that cinder block at 290 fps.
The impact ejected the insert and
the nock....did not split the arrow and didn't break any blades.
Those are tough arrows and heads...