I performed a wonder at high speed once: I dodged a deer while I was doing about 110mph on I-5 somewhere in southern Oregon and didn't even wake my passengers, but that car didn't wander...
There is a ton of info cataloged in the DIY section. It may take some reading, but its your best bet to figure out what your problem is - you know how the problem feels.
http://www.peachparts.com/shopforum/forumdisplay.php?f=82