I was having problems getting the 400ex started today so I decided to check the spark. I pulled out the plug, stuck it back in the wire and was getting a white spark as it was grounded on the block. I always thought a white spark was weak and blue was strong. I grabbed ahold of the insulator and spark plug and the whole thing pulled right off of the wire. So, I had the yellow insulator and the plug in my hand and the wire was just hanging. I wasn't sure how it went back on and ended up ruining the insulator. Do I have to buy a whole new spark plug wire or what? How much will it cost?