I just rebuilt my 2002 mountain max triple with new pistons 200 miles ago, I pulled the head to check it out, am i too rich or too lean? it looks pretty dark and my sparkplugs were always dark in color.
They look good. The tops of the pistons have clean spots near the ports, just like they're supposed to. It's perfect to just a little rich, but if you're not fouling plugs, I'd leave it there. You don't want it lean.