So I posted a while back because I was having issues. Ended up putting a top end rebuild kit in. After that it started right up in two kicks. I changed the oil, and drove around for a bit to break it in some. Went to take it out for an actual ride and all of the sudden it wont start. The plug was BLACK. I presume from all the assembly oil etc mostly. I put a new plug in it and it feels like it wants to kick over but it wont. The plug looks good and wet and a couple kicks. What gives?