I had the same problem with my (US 13) Van's going into Ride Delta's, they were too skinny and I had to kick my boot's into them. I shaved the outer part of the sole's with a rasp. I ended up getting new boots (Nitro Anthem) with reduced footprint, they fit great. Seems like the Ride bindings are made for reduced footprint boots.
My suggestion would be to take your boot's with you when you look at bindings to make sure they fit.