OK, I guess I'm a moron. Before I bought my plasma (PN51D7000) a couple months ago, I researched and came to the conslusion that there was no need to worry about IR or burn in on Plasmas these days..."just do whats normal" is what I understood, and you won't have an issue.
Well, fast forward...bought the TV. Read through the thread for this model on calibration settings (yes, I know I didn't "callibrate" the TV, just played with the suggested settings to find what "felt" best). Anyway, TV looked great...fantastic on blue-ray through PS3...BUT, like a dumb ass, I didn't think to dial down the cell light & contrast when I switched the PS3 from a movie to a game.
Lately I've been hooked on Madden in franchise mode...not really playing the games so much, but doing the offseason stuff, evaluating rosters, trading, drafting, etc. Well their freaking background on these scenes has some extremely bright areas (like stripes almost) next to some extremely dark areas around the screen...especially in the lower left portion of the screen, but also some on the right hand side. Well, guess I hung out on these screens too long...has resulted in what I'd call burn in in these areas since it doesn't seem to be going away.
After first noticing the issue, any time I use the PS3 for anything other than blue ray, I'm dialing back the contrast & cell light settings to avoid any further issues.
I've been using the "scroll" function on the tv for IR protection, using a thing called Pixel Repair which alternates black & white full screens, and have tried a dvd that has small color blocks filling the screen constantly moving/changing. Anyway, image is still there after many hours of each. I can certainly see it when there is a white screen of course, but I can also see it watching regular tv anytime there is a solid color near the left or right edge, as long as the color isn't too dark.
Really noticible watching the x-games on the snow yesterday. At this point, its just a bit annoying when I see it, but can't freaking keep from looking for it!!
SO, nearing the end of the time when I can return the TV...thinking do I want to return it and get something different or just keep it and live with it. If I thought it was something that would get a little better over time, I'd just live with it. OR if I could somehow "fix" it. I did read somewhere that any IR fix problem needed at least 2x the hours that caused the problem in the first place...so If I was 20hrs on the screens with that background, I'd need 40hrs of the "repair". If that is true, maybe I just need more times with these processes.
Anyway, looking for sage advice (and like I said, yes I know I was an idiot and didn't use much common sense in my usage patterns in the early life of the TV)...Should I just return it and either get a new one or an LCD?? or keep at the repair processes and think it will gradually improve?? OR is there some better way of fixing??
any advice other than a brain transplant will be appreciated.

Thanks,
jj