I'm right in the middle of making supper for Nancy (she gets home from work in a few minutes), but after we're done eating I'll be posting the 2013 rule changes. Dan Warner just sent 'em to me. There's one attachment for bikes and one for cars. Thanks again, Dan. Last year I got them right around Thanksgiving -- and sure enough, T-day was a few days ago and here they are again.
I'll cook and eat and then get back to you, but I thought you'd like to know that the changes are forthcoming (maybe even fifthcoming).