The fixture profile for the Prolights Stark 400 is missing a mode, FX-16BT.
This is essentially an identical profile to FX (which is available), however with DMX channels 7,8 being used for intensity and all other channels incremented by 1.
However, it's not possible to edit the fixture profile itself easily (is this a bug perhaps?) because of the use of Modes the parameters which have ranges associated with them cannot have the DMX address edited. I can edit all the other channel numbers and that changes these, but I cannot select and change these numbers directly.
Also, the colour calibration is wrong. The Robe LEDBeam 150 uses the same emitters and is much much closer, suggest the same calibration mode is used for this fixture?
