I've seen this far too much. I think there's a solution, it has been a veeeeery long time.

Y'know, for honking, even shifting, your driver arms keep spamming the animation. It's extremely frustrating, PLEASE assist..cheers

http://www.youtube.com/watch?v=06wNxxaTGCA

Try upgrade version of game to 3.5 (.20040228 or .20040310 build), but in that versions arms don't moving generally...