THIS BOAT SAT IN STORAGE FOR 1 1/2 YEARS. WHEN I STARTED IT IT RAN PRETTY OK BUT WAS MISSING JUST A BIT. I REPLACED THE SPARK PLUGS AND THE ENGINE ACTUALLY RAN WORSE! I USED THE RECOMMENDED PLUGS L76V. COULD A BAD PLUG WIRE CAUSE THE PROBLEM? ALSO THE TOP OR #1 PLUG IS BLACK WHEN I PULL IT...