video or data levels for Wraptor DCP plugin?

Hi

I'm new to Adobe Media Encoder, and have been getting great results with the free Wraptor DCP plug-in.

Video is exported from Avid MC as PRoRes HQ with video levels [64-960].

Black backgrounds to titles look a bit washed out on our DCPs, so I'm wondering if I need to scale to dat levels on export for Wraptor?

This is not necessary for mp4, mov etc as all the Mac players [VLC, QT, Mpeg streamclip] automatically scale to data levels.

Thanks for any advice or info

Nigel