Saddle fitting question

[Henny]

My albion jump saddle has started to rise up at the back, and is not sitting so well. I am going to have the saddler out in half term, but I just wanted to check if that means its too wide or narrow, or something else!

Thanks

 

[Britestar]

Can mean it is too wide at the front, but saddler will be able to confirm.