Thanks for the Eevees and hopefully you can get the right one soon ;)
I have an update on the progress of this.
I have managed to breed the following.
Whismur 1: 31/31/x/31/31/31, Male, Lonely, Soundproof.
Whismur 2: 31/x/31/31/31/31, Male, Modest, Soundproof.
Whismur 3: 31/31/31/31/x/31, Male, Timid, Soundproof.
Whismur 4: 31/x/31/31/31/31, Male, Quiet, Soundproof.
Whismur 5: 31/31/31/31/x/31, Female, Modest, Soundproof.
Whismur 6: 31/31/31/31/31/x, Male, Modest, Soundproof.
Whismur 7: 31/x/31/31/31/31, Female, Modest, Soundproof.
Whismur 8: 31/31/31/31/x/31, Female, Docile, Soundproof.
Whismur 9: 31/31/31/31/31/x, Male, Adamant, Soundproof.
Whismur 10: 31/31/31/x/31/31, Female, Admant, Soundproof.
I have a couple of 3-4IV Rattled Whismurs which I'll be using to breed a modest 5IV one with one of the modest soundproof males.