Just sign on the laminate with a very fine felt tipped pen, and then laminate over the laminate. If the pen won't work very well, take some 600-grit sandpaper, stick some on the end of a pencil eraser, and rub the area just a little bit, then the pen should work ok.
I don't see why not. I took my type rating ride one day and the examiner issued a temporary. I saw the same examiner the next day for my single-engine ATP. He took that temporary and issued me a new one with my ATP SEL.
Thats exactly what I did it worked pretty good except the laminate bubble a little but not too bad...........However I might not have it long because I'm going for the AGI...........Well of course the question is does the AGI go on my CFII MEI cert. or do I get a whole different certifcate because it is a ground instructor?
You are obviously not the only one around who has done this. I did it once, and did what Wiggums said and relaminated it. Worked great except it took up twice as much room in my wallet. On the bright side, it made a fantastic projectile weapon. I figured I had the heaviest/toughest CFI certificate around. Apparently, several others are walking around with these uber-certificates. If you're planning on trading it in eventually, I would do the double-laminate and not sweat it. If it's one you're gonna have for awhile, I'd do the double-laminate and order a new one that will look nicer.