What is the actual oil temperature and rpm when you're getting that 40 psi reading? Even though you're in Georgia, ambient temps are still probably much lower than what most of us see in the summer.
I'm not aware of any change made for 2013 that would alter the normal specified oil pressure. Last time I looked the Harley spec was 30-38 psi at normal oil temperature (230°F) and with rpm's of 2000 or more. Higher rpm's will create higher pressure, and lower oil temperatures will do the same. Over the years most of us have had normal cruising speed oil pressure pretty close to 32 on the gauge, plus or minus maybe 2 psi.
If you continue to see 40 psi with the engine oil up to normal operating temperature and running 2000-2500 rpm, I'd suggest having the dealership test the gauge for accuracy. It's a very simple procedure to use a T fitting to insert a real certified mechanics pressure gauge between the engine case and the oil pressure sending unit so they can directly compare the real pressure to what is displayed on the dash gauge. Harley gauges are not exactly world renowned for accuracy btw. At least then you will know if the reading is real. Btw, what is the gauge reading at idle with the engine up to temp?
Jerry