Okay, I think I see a pattern here that wasn't clear before. You take the number of stitches between AND the k2tog so a k6-k2tog would be 8..so the co stitches must be divisible by 8. Right? All this might be easier if I was more math literate. I just have trouble remembering what I'm supposed to do... Word problems were always the worst and this is one BIG word problem!
Anyway... I'm getting it.