THE PILOT'S IMPROPER REMEDIAL ACTION CONCERNING A RIGHT ENGINE POWER ANOMALY, AND HIS FAILURE TO MAINTAIN ADEQUATE AIRSPEED DURING GO-AROUND FROM AN ABORTED PRECAUTIONARY LANDING, WHICH RESULTED IN A LOSS OF AIRCRAFT CONTROL AND AN UNCONTROLLED DESCENT. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF THE OWNER/OPERATOR/PILOT TO ASSURE PROPER MAINTENANCE INSPECTION OF THE AIRCRAFT, FAILURE TO COMPLY WITH A SERVICE BULLETIN CONCERNING THE ENGINE FUEL CONTROLS, SUBSEQUENT BEARING FAILURE IN THE RIGHT ENGINE FUEL CONTROL, AND THE PILOT'S LACK OF FAMILIARITY WITH THIS MAKE AND MODEL OF AIRCRAFT.