Thank you for pointing that thread out to me. I've read it in it's entirety. It's interesting. I'm *not* having that problem at all. There is no sticky residue that is causing these horizontal lines. They are not caused by something foreign on the screen, they are caused by "dents" from being stored on the roller (more on that in a bit). However, that thread DID make me realize something else about my screen. All of the tab tension positions on both sides of my screen are oozing glue. In between two of the tension positions I can see a PERFECT outline of another tensioner which lefts its gluey impression when the screen was rolled up... YUCK! Fortunately, this stuff hasn't migrated onto the screen yet.
Back to the creases, or dents.
I did hear back from my dealer (they left a message, and I've yet to speak to them). They had contacted DaLite about my issue and this is what they had to say.
"Try applying heat to the effected area. It's safest to apply the head to the back of the screen, but it can be applied to the front as well. You should also consider leaving your screen in the down position more often."
This is pretty much unacceptable for a > $2000 screen that is only two years old...but anyway. I spent about a hour with my wife's blow-dryer. It works, but it is VERY tedious, and very hard to know when you've done it "enough"...Also, I have no clue how much heat I can apply before I destroy the screen...Very nerve wracking. I've also left the screen down for 3 days now. The results are in. To the naked eye, the ripples are gone...However, The lines ARE NOT GONE when watching a film. It's like this area of the screen now has a different (lower) reflectivity.
I'll be contacting the dealer again. It seems they want me to contact DaLite for any follow up, so I might end up doing that.