Just get everything together for the current regs and then try to adjust to the new ones. Also, call customs again and get the name and contact information of that person and have it handy when you cross over. I am guessing they will be flexible for the first few months, if you show that you did all you could to prepare.
I am guessing that they are looking for stolen vehicles and the process is changing to catch more of them. I sold some snowmobiles to Canadians and I had to provide information for them to give to US customs and they needed it 72 hours before bringing them to Canada. They just needed to verify they weren't stolen.
[This message has been edited by jaskispyder (edited 03-27-2014).]