Originally Posted by Fat RuukaRiou
I went through the entire RNG process - got my seed of choice, found time/delay, and used EonTimer, then advanced to the correct frame and got the Egg. I traded it to HG (where I wanted to hatch it since I caught my Shiny Rayquaza there and thus know my SID for HG) and hatched it, and it ended up with a Manaphy that wasn't shiny and only had three correct IVs. I've double checked to make sure that I didn't get my ID or SID wrong anywhere, so any idea as to how I might have messed up?
I don't know for sure what the cause is, but it might still be the NPCs. You have to mash A as quickly as usual to get the manaphy egg.
Also possible is that the chatot responses of the adjacent seeds might be similar to the chatot responses of your target. That's why you have to listen at least 10 of them chatot pitches.
Or Reporter might be wrong, maybe.