Can anyone help with solving a photo rubik's cube?

[fugiyoshi]

The cube has 6 different photos on it. Each photo is of something in nature... for example on one side there is a tree in a desert.
So I've "solved" it 7 times in the same way you would normally solve a cube. The problem is I haven't been able to keep the center on the last side oriented right.

The cube is completely solved, including the center orientation on 5 sides, but then my last side looks something like this:

M M M
M W M
M M M

So my question is... how can I actually SOLVE the cube? It's not technically solved without all of the M's facing right side up, but as far as I know the centers are impossible to manipulate.

Does anyone know how to fix this problem?
Thanks.

 

[Yes We Can!]

T-Perm *2
or
(R U R' U)*5

 

[Akash Rupela]

wow sounds like parity on 3x3

 

[fugiyoshi]

Thank you so much! Wow that is so simple... haha I feel dumb now.

 

[Cubenovice]

Waiting for you to return with a solve where you have 2 centers of by 90° each...

Solution is still T-perm: T-perm twists center 90° - replace center via slice move - T-perm - move slice back : done