As mentioned make sure that you have the binding centered. But already on a wide board unless you have some absolutely honking feet (which I doubt if you're small enough to fit on a 155) there is almost no chance you have too much overhang. You do want your toes to actually come over the edge of the board a tiny bit. A properly set up board will have your heel and toe just barely going over the edge of your board. This allows for maximum edge control but wont be enough to cause any toe or heel drag. I'd almost guarantee your fine but boot pics is the only way to be 100% positive, right now I'm at 98%.