"He who marches out of step hears another drum." ~ Ken Kesey
What eb said. Some report better image quality when you shoot these lights from further away onto a larger area. I'll report back on that this month sometime. Our screens have came out great with this setup but it's possible that they make different reflectors for these.
I recommend, after you hook it up with the DIN cables and get a little comfy with it, that you set the photocell so your light units are about at a second. Instructions on this are in the manual. Another tip: get the kit for the gears that rotate the shutter and keep it for backup. They're thin cast aluminum and they break easily I've found.