If it was me i'd let them replace it. That's the great thing about being so early into the warranty.
I'm unfortunately on the other end of the scale, my 3200 has had a recurring problem but since i'm out of warranty they only want to send it to the local service agents, a process which takes three weeks at a go and it still comes back not working properly.
Looks pretty good to me. I can see what you mean, but it looks quite good as far as these things go.
You're sure your screen is dead flat? If it isn't you can have part of the image out of focus, just like if the PJ isn't square to the screen.
If it is all flat - the blur could be inherent in the lens (photographic lenses will often have a soft corner, with differing copies of a lens having different corners to varying degrees). It could also look blurry because of the panels not aligning in that corner. You can test for panel convergence using the following images:
At the end of the day these things turn into a fine judgement. I think with Epson what comes out to you is usually a guy with a "refurbished" unit. Depending on your view you may prefer something that has been checked recently, or you may feel that you only want a factory fresh unit that hasn't been apart already. You might get a better unit. I don't have any personal experience of Epson service.
I was told it would be a new unit. ill try those images when I get a minute. I'm just a bit wary of ending up with a proj that's worse then trying to get my old unit back or something.
if I'm watching movies I don't notice it unless I have subs on. when I look at that corner I find my eyes hunting for focus. my eyes are quite sensitive to stuff like this I have rbe which is why I bought an lcd.