I have a 13 pro. Last season the reverse worked just fine, When I did my pre-season check in Nov. it didn't work. Didnt worry about it then. Went out a few times in beginning of dec. Low altitude and still didn't work. took a trip to cook just before Christmas and still nothing. Now its annoying. sled has 400 miles on it with a 910 and vipec from day one. RPM's at 1800. Im looking for some places to start looking. I checked all the connections and couldn't see anything obvious. With the machine running you hit the reverse button and the engine dies but does not fire back up-Just flat dies