What was found
MAIN CABIN DOOR WILL NOT OPEN PROPERLY. WHEN OPENING FROM INSIDE THE BUTTON AND HANDLE FUNCTIONED FINE AND DOOR OPENED ABOUT 1/2 INCH THEN STOPPED MOVING. DOOR WOULD NOT FALL OPEN LIKE NORMAL WITHOUT AN EXCESSIVELY HEAVY PUSH FROM INSIDE. WHEN TRYING FROM OUTSIDE THE SAME SITUATION HAPPENED WHERE THE DOOR OPENED 1/2 INCH WHEN USING THE OUTER HANDLE AND THEN THE DOOR STOPPED MOVING. DOOR REQUIRES A VERY HEAVY PULL ON OUTSIDE HANDLE FOR ABOUT 3 INCHES OF DOOR MOVEMENT BEFORE IT WILL FALL OPEN ON ITS OWN. DOOR MOTOR OPERATED FINE UP AND DOWN. SILVER DOOR HANDLE ON OUTSIDE OF AIRCRAFT DOESN¿T SIT FLUSH OR LOCK UPON INITIAL CLOSING OF THE HANDLE. AN ADDITIONAL PUSH TO MAKE IT FLUSH AND CLICK AND LOCK IS NECESSARY. CORRECTIVE ACTION: REMOVED SHIM. OPS CHECK GOOD. IAW CE-680A MM: 52-10-00.