Decided to pick up a new plug for my 2 cycle Toro proline. Looked it up in the Champion book and it says "CJ8Y". Brought it home and pulled the old one out and its a "CJ8" and there is a clear difference on the length of the plug. New one is longer. Question is, do you think the previous owner put the wrong plug in it? Everything I find online says "CJ8Y"??????????