What is up with my parking brake?

[Chrisz24]

I dont use it in my driveway because it is flat but at school I park on a hill so I use it every day. Sometimes I only have to put it on like 2 clicks for it to grab and then other times I will be on the same hill and have to yank it like halfway up for the same results, is it because of the disc rear brakes? I tried it in the drive way and the frist time I had to pull it way up to get it to hold the car but by the 4th time I put it on I only had to pull it 2 clicks for it to keep the car still, anyone know why this is?

[GregWS6'01]

it's prolley just a little "give" in the E-brake cable....when you use it always pull it all the way up