Sinking Brake pedal. master brake cylinder repair kits?

[xztraz]

When i stop at red lights and such i can feel the brake pedal sinking a bit and then it stops a bit futher down.
Can't find any visible leak in the break system. Brake fluid level seem to stay on max.

Internal leakage in master break cylinder?

Are there any repair kits (internal seals) available for the puma?

I have the black master cylinder. -98

 

[xztraz]

Does this look like the correct kit?

http://www.ebay.co.uk/itm/Repair-Kit-brake-master-cylinder-LUCAS-AUTOFREN-for-FORD-FIESTA-IV-/111351841745?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AFord%7CModel%3APuma&hash=item19ed1643d1" onclick="window.open(this.href);return false;

 

[JPTipper]

this one?

http://www.ebay.co.uk/itm/Ford-Puma-Brake-Master-Cylinder-Repair-Kit-M1643-/281239005638?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AFord%7CModel%3APuma&hash=item417b26a9c6" onclick="window.open(this.href);return false;

 

[xztraz]

seem to be the same as the one i linked to. ordered. see if it fits.