Well, I can't say how many times I've had to struggle with that damn spring. Here is a fantastic walkthrough of the X9 shifter, there's some similarity between them and I hope it might help you figure out what you need to know.
http://www.ridemonkey.com/forums/showthread.php?t=206672&highlight=rebuild
If not, we're going to need some pictures
http://www.ridemonkey.com/forums/showthread.php?t=206672&highlight=rebuild
If not, we're going to need some pictures