New Brake discs

[paddytabby]

Hey everyone

 

I recently bought new discs and pads for the 350z and had a bright idea to fit them myself. I have done the front two but when doing the first rear today i have run into a problem.

 

One of the piston seals is popping out of the calliper, Its still attached around the piston but it will not sit in the indent in the actual calliper casing. Not sure if anyone has run into the problem and if theres a solution?

 

Any help is much appreciated. I have attached a couple of pictures.

 

Thanks Paddy