Hey Oryx, im not sure which long straight you are talking about lol... I don't really play much anymore so i just get my Wipeout fix watching the videos! Maybe you could point out the section in this youtube video by seconds?
http://www.youtube.com/watch?v=C7VSpmssGg8
I only ever thought there was 1 main br section just after the start line and the other at about 29 seconds. (the one i cant do)