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I know I have 2 EV'd gengars, they don't have perfect IV's or anything, just my normal breeding, I can check their HP after and let you know I'm not sure. I'm on now though, but I still don't see you?
Some people extract the pokemon from the games and look into their coding. I don't know how it's done exactly since they keep it a secret so hackers don't know how to dodge it. Anyway, I can't recommend anyone but you can ask some mods. They might know.
Thank you for the trade! And I wouldn't suggest the Celebi and Raikou to be put up again even if they do pass a hack check. Hack checks are easy to pass now so you'll need to ask someone experienced with more through checks.