The coil on my 185 was cracked, so I bought a new NGK one. Problem is the old OEM coil used the small connector for the spark plug and the new one needs the big fat heads like vehicles use. The D8EA's seem to only have the small head. What are my options here? Is there another plug that will work. A place to get the bigger head to screw on to the litle threaded head of the D8EA??