2016 150HO while winterizing this year the engine would rev wildly on the 2nd stage of holding in the idle button and advancing the throttle, it stayed in neutral but reved like it was in gear. After 4 or 5 tries I wiggled the handle all the way back and forth with the button held in a few times then on the sequence after that it worked. Any suggestions on where to start looking or should I just take to the shop(90 miles away) next spring?