Having trouble mixing IVs with parents?

I wanted to train up a full IV Ferrothorn, so I caught one in the wild. I checked the IVs and the man said; “Incidentally, I would say that its greatest potential lies in its HP. But its Attack stat is good too. And, well, its speed stat is good, too. But this Sp. Def stat is going to leave you high dry.“I thought this was perfect to train, so I started breeding it until I got the nature that I wanted and egg moves. I managed to get a Ferroseed with IVs in it’s Def and Sp. Def. So I tried to breed the HP - Attack - speed with Def and Sp. Def. But all I got was clones of the parents and ones with less IVs. I have made no progress getting def and sp. def with and of the states of HP, Attack and speed. I am using the destiny knot and everstone as well. I even tried using the power bands on the single IV ones but got nothing. I have been breeding for a very long time now and still haven’t been able to mix Def and Sp. def with hp - attack -speed. Is it because the man mentioned it’s sp def is bad with the one with HP - attack - speed IVs?? Or is it because it has a really low chance to mix? I have no idea whats wrong, please help me.

Pleaselog inorregisterto add a comment.

To get a perfect IV Pokemon, between both parents there needs to be perfect IVs.

For example:MOTHER: x/31/31/x/x/31FATHER: 31/x/x/x/31/x

You don’t want the perfect Sp. Atk stat, so I left it out. What I am saying, is that the mother’s imperfect IVs need to be filled in by the father, and vice versa. Once you’ve done that, it all remains on luck as to if you’ll get a perfect offspring.

And it won’t really ‘mix up’ the IVs. Like, the Defense IV from the mother/father will be given to the offspring as the Defense IV. Like, it would be:>Oh! He/She’s got your eyes.>Oh! He/She’s got your feet.>Oh! He/She’s got your Defense IV.

So, if that’s what you’re thinking, you’re wrong. Just sayin'. :3

Hope I helped. :)Source: Experience