On tracks like Järnfälla that is really twisted and tight I use to brake and turn into the corner to carry more speed and then it's full force on the throtle and exacly as you explain things above my post.
guys i found out something interesting. Keith barrick has been racing since 1995 and he and his dad owns KnK karts. from what i saw it's just made in asia and Canada. Keith runs shifter and rotax and has won several canadian championships.