Help in Dark Desert...

Hyya.. I'm kinda new in this forum, but I need some help.
I've already mastered Sonic Riders, but when I play in the Dark Desert course (Sand Ruins in Babylon set), I'm always having a little problem.
When I reach the part when you get in an energy ball (a light blue orbit) and get in some kind of a teleporter which gets you into the town before the finish line, (when I have to roll the left analog stick) It takes me some time to get into the middle of that room and I see other racers (CPUs) finish that part in 1 or 2 seconds and I tried everything... it still doesn't work...
If anybody knows how to get faster like them, please tell me...

*SILVER'S ULTRA EXTREME SUPER BEST FAN*

I think that the faster you roll that analog stick the faster you get through it. Just an idea though..

Guys..Its anotehr thing. Its the way that the camera turns when you enter. Sometimes.(Often rare) The camera triggers in you'r character. Not on the middle. Which by a game glitch causes you to follow it. It happens often rare. in minnimun. 1 Time out of 50 times.(Trust me i already tested) There's a random Chance of you to get In there at max speed...Which means you're going the same way as bots,Maximum of times. You've got an 1% Chance. This chance is when you're at 140 or less with speed. It becomes 3% When you're at 170+ When you're at 230 You have an 10% Of chance. But thats the seondary chance,The first becoems the secondary and the first one becomes 3% Thats The highest percentual of chance that you can get in the game. I Also find relats of people at 300+ having an 20%Of 1st Chance and 99.99% of seond.Thast means some 5 Tries and he might do it. But the angel you enter the chamber changes the answer,I Recommed you entering from the left. Cause the first time i did it. I Did it on that way. With a pretty high speed. that can only get if you are In Super sonic. At max speed,When using boost. That will give you a nice 50%. But its pretty hard to get at sonics High speed without losing rings...So..Pacience its the key.