Humm... I'm noticing something here. In pics 1 and 5, are you using Quickshow cues to produce those fan effects and... if so, do you know which ones?
I'm playing the antagonizer here for a minute. The termination point appears to be a dot with a line running through the middle. Not long ago when this was being reported by others, it was suggested to be the scanners. Since these are 506's, I'm curious as to why we may be seeing that with these projectors as well. A workaround was adjusting lowering the blanking settings and scan rate.
http://www.photonlexicon.com/forums/...-Show-question
There is a video Bill made that I can't find, trying to demonstrate that it's the scanners so... I'm wondering why you appear to have the same issue.