I REPAIRED MY MARUTI ZEN LXI 2005 MODEL CLUTCH COVER ASSY

I REPAIRED MY MARUTI ZEN LXI 2005 MODEL, CLUTCH (COVER ASSY CLUTCH, DISC COMP CLUTCH, BEARINGS & OVER HAULING) BUT NOW MY CAR VIBRATE TOO MUCH WHILE DRIVING OR LOW SPEED. WHEN I CONTACT WORKSHOP THEY SAYING YOUR CAR IS OLD MODEL NOWDAYS CLUTCH COMING AS FUEL INJECTION MODELS. LITTLE BIT VIBRATION WILL BE THERE IN YOUR CAR ALWAYS. BUT MY CAR VIBRATES TOO MUCH & NOISE CAN EASILY HEAR BY ANYONE IN THE CAR. WHAT SHOULD I DO