i've got a little problem. i've got a 1979 ford F150 with the inline 6. i put all new lines and new rear wheel cylinder along with a new power booster and master cylinder. my problem is that i've bleed the master cylinder and the lines mulitple times now and the pedal still is soft, there's brakes n they stop good but the pedal is still soft. it there any way to tighten up the pedal so it's not so soft n drop 1/2 down to the floor? any help would be great because i've run out of ideas!!