Hey guys,
Just brought back my new bike from the US. I had my doubts as the dealership kept reassuring me that he'll handle all the paperwork and have everything ready for me for the border. They told me to only cross at the Peace Bridge.
No 72 hour notice ahead of time and I did it today (Saturday). 20 minutes later and I was already on the road for home.
It sounds like you missed the US customs exporting part and only did the Canadian customs importing part. Exporting goes through Lewiston on weekdays only. It might not be a problem really, US customs stamped "US Vehicle Export" on the previous owner's ownership but I don't think either Canadian customs, RIV, or the licensing office or insurance company actually look for the stamp.