Brakes Sticking after not being driven for 3 months

[Snowface]

As title says not driven the car for a couple months and it seems the brakes are applying them selves automatically. Seems to be a problem with the vacuum servo. Has anyone had this problem or knows what needs to be done?

When i rev up to about 2k rpm i can see the brake pedal releases itself back to normal position, but when its ticking over the brake pedal pushes itself on by about 1/2 an inch.

I'm using a T40 manifold and there is a bit or oily petrol in the trumpets, wondered if that could block any filters that might be there? (is that an inline filter between manifold and servo?)

Any help would be appreciated.

[bump]

There isn't an inline filter that I'm aware of, but i am thinking that the non return valve could be causing the problem.

Cheers

Bump

[nathan.]

I changed the 1 way valve on the servo pipe when this happened to me, seemed to have cured it.