No, I'm not joking. With the T-5s, and v2s, plugs were black and border line wet. With that said, when I bought the v4s, they said up the pilots from 27.5 to 30, and run 310 mains with the cpis. Upon tearing into the carbs, they already had the jetting I was recommend from two different shops. This was further backed up by other people in this thread, and there jetting in similar elevations and mods. For what its worth, I'm running straight 110.