Sherbert Land is a hard track, you have to take risk and make sharp turns/jump over some little gaps to get a good time. (I think you mean 2.16.xxx? )
Do u use the Magikruiser on it? It's the most useful bike there.
@CTK495: The best thing to do is first try to beat all normal staff ghosts at Time Trials, and then unlock the expert ghosts. Then try to beat all expert staff ghosts. The times here are in most cases many seconds faster than the expert ghost staff ones.
MK7!! 3DS friend code: 0688 - 5579 - 0994
Also playing DotA2 beta!