basically i have 4 master cylinder, all girling.
front brakes, back brakes, clutch and handbrake.

hand brake is in the car with the resevoir fitted directly to it,
the other 3 are off the pdeal box with remoetly fitted resevoirs above them.

the handbrake is T'd into the rear system.

when i top up the rear brake resevoir in the engine bay, the fluid just fills up the handbrake pot (with the handbrake released) but if i pull the handbrake up this stops.

but if i pump the handbrake it fills up the brake resevior in the engine bay, it doesnt lock the brakes on

any1 know what ive done wrong?
lol