Alright. Let's ask for some help on that one.
Please first excuse my noobism on technical terms/words you may have the habit to use.

Since about three months, I've been breeding around a whole family of long manes with short tail/feline/clear eyes/teacup genes, starting from ONE meeroo.

I have now about 5 couples coming from backbreeding this meeroo.

The aim is to try to get all of the genes out and I kindof succeeded in getting all of those by backbreeding BUT I still didn't get it all together ! My hope is to end up breeding a long mane/feline/clear/short tail/teacup meeroo... And then, maybe trying in adding a coat to it to get a perfect weirdo.

So, here is how I worked it :

1st Generation :
Girl - Long mane clear eyes teacup 0.0 with feline, short tail genes.
Boy - Short upright male with notched, short tail, clear (I know it wasn't the best idea but it's all I had at that time and I thought that I could try to get a notched long mane too, so well, I tried).
Result -> clear & teacups

2nd Generation :

Kid n°1 (teacup) bread with a caledonian girl (once a gain not a very good idea, ikr).
-> Leaded me to get 2 normal roos. Let's call them Grankid n°1 et Grankid n°2

Kid n°2 (teacup too) was bread with Grandkid n°1 (here on top), an all simple roo.
They gave 2 long manes and a bunch of normal teacups and that was yet a good result for me.

I then took one of these 2 long manes (Grandkid n°3 and 4), Grandkid 3 and bread him with his grandma... Yeah I know, it's bad.

The grandma is the first teacup/clear/long mane I was talking about, if you follow me (I know, that's complicated). They gave me : long mane/teacups ! A ton.
Then, when grandma was too old to breed, I took Grandkid n°3 and grandkid n°2 and bread them together ...
Then I got : clear/teacup, clear/short tail but so far... no long mane :'(.

I coaxed a bit of all of the family... Kids of kids of kids of kids... Mixed it all together...

In the end, what I got so far is feline/clear, feline/teacup, teacup/long mane, teacup/clear, teacup/short, long mane/clear (cute!),... And from a family of fawns, I got winecoats and ursine recently.

But... What I don't get is why, oh why, oh why... I'm not getting a long mane / feline head ... They all have the gene cos they will throw regularly a feline or a long mane, they all also have short tail and clear genes but I don't get what I want to get...

So if someone could help me understanding where I'm mistaking and IF I am mistaking and IF I should keep on breeding all of that bunch of cuteness (cos yeah, I love long manes right), I would be happy.

And to have a good vision of the pedigree ...

Granny : http://www.worldofmeeroos.com/index.php?q=meeroos/meeroo/1334435 Please note that the three first roos aren't mine but my friend-who-gave-me-the-roo's.

Some feline head granddaughter : http://www.worldofmeeroos.com/index.php?q=meeroos/meeroo/2470339 (bread from one from the family and one random feline head bought somewhere)

Ursine/clear/toy grandgrand daughter :http://www.worldofmeeroos.com/index.php?q=meeroos/meeroo/2547554

some short tail/clear girl from the family :
http://www.worldofmeeroos.com/index.php?q=meeroos/meeroo/2482388

There ... Sorry if that's a mouthful and such and blah.