ehm, it is written in the first post of the first page... (oh my god)
I wanted to ask exactly when thundurus' ivs are generated, because omegadonut said when you encounter him out of the house, but kaphotics said they are set when he flies away...
and, how does it work for reshiram and zekrom? why is it impossible to abuse for their ivs without losing against N\filling the boxes?
I know you wrote it hundreds of times but everything is a bit confused in the posts...
Technically they are both right. It doesn't matter which one it is because nothing would change from the moment you encounter him to the moment he flies away.
I have no idea what you are really asking on this one. It is easier though, if you just try it for yourself to see what happens. Then you will know the answer. Reshiram/Zekrom are very easy to abuse.