lately ive noticed that the bike takes a really long time to warm up, if i give it gas too soon it just dies. also at high rpm's it 4strokes badly, i had the same thing happen before when it was warmer, but after it warmed for a few minutes it would work properly. also i noticed this happens when its raining or really humid, but not in cool dry weather. im not sure if this caused it, but this started happening when i reduced the spark gap... any ideas?