Brakes make my Celica shake, I have searched.. Options

[eliaz]

Hi all,
ok here is the deal. I imported me a 1995 Celica Gt just about 6 months ago. What a great car! Anyways, the brake(s) were really bay, when I braked the whole car shaked an vibrated. I could also feel the vibration in the brakepedal. So I thought, bad disc! I should also mention that it seemed like the vibration came from right front brake. I changed both front discs, pads and shims. (Also changed rear pads and shims) Wolaa, problem solved! I was very happy. Then about 2 months later i decided to rebuild all of my calipers (front and rear), and so I did. Jup, woked fine for a long time. Bud now, guess what? The problem is back! I can't understand what's wrong. I may have driven about 6-7000kms since disc replacement. Bad disc again? What can I do about this? Machine the disc? But I guess the problem will come back..