What was found
AFTER DEPARTURE THRU 10000 NOTED/FELT VIBRATION, CHANGING FROM CONFIGURATION #3 TO FULL, GOT HEAVY SHAKING WITH ADDITIONAL VIBRATION. SELECTED CONFIGURATION #3 VIBRATION LESSENED. LANDING UNEVENTFUL AND FULL. AIRCRAFT IN CONTROL AT ALL TIMES. DECLARED AN EMERGENCY, LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS GROUNDED. INSPECTION FOUND #1 SPOILER BOARD FLOATING. REACTIVATED SPOILER SERVO CONTROL AND THEN DEACTIVATED SPOILER SERVO CONTROL PER AMM 27-64-00-440-001-A AND 27-64-00-040-001-A. OPERATIONS CHECK OF #1 SPOILER BOARDS CHECK GOOD. REPLACED RIGHT HAND #1 SPOILER SERVO PER AMM 27-64-41-0401. LEAK AND OPERATIONS CHECK GOOD PER MM 27-64-00-710-001-A.