Originally Posted by
fredswain
That's backwards. 4 gear shifts more weight and will wheelie before a 3 gear. If you are pulling wheelies in MM3 then you are doing back flips in MM4. If you need MM4 on any carpet track, you really need to learn some fundamentals of tuning.
You should send Jorn Neumann an email
Out of around 50 setup sheets at Petitrc on carpet only one is mm3, the rest are mm4