I use 3ds max for modeling, this way i can make new animations too.
all the tag are named bolt_something, for ex. bolt_driver. there is no >*< in the word. the center is the gravitational center, you know. the middle of the triangle shows what have to be there.
i am very happy about your agree to a naming convention, that will make our work much less confusing, thanks.
if you want you can sent me your .glm file, posibly an exported 3ds version. if you like i can sent you my model in exchange. you can take look at them in game and you can see my solution to the driver problem.
take also a look in my thread, i answerd your question there too.