Where are the dirty smudges ? ... you mean the blurred shell casings being ejected ?
I didn't realize what they were.
Sometime after calling them smudges I ended up finding a smudge tool in Gimp and used it to smudge away the smudges...heheh
It looks a lot better now.
Not sure who created it but Thanks, I've been using it for maybe 5-6 months. Found it in The Exchange of everyday screen shot thread but haven't found it yet..
Before and after
Edit: Just found out that this pic was made by Blade.
Thank you Blade, very nice work.