Anyone messing around with these? 2-3 karts on the local track runs them, and they have an huge advantage to us others with fixed timing at about 8*. I contacted the official honda dealer from my country about it, but he said there are 2 new versions, one rpm limited to 4000 and one limited to 6000, although i believe there must be another version, or a way to bypass the limiter, because these guys definitely aren't running under 6k rpm..