Does any one know why you have to disconnect the reverse plug on a 500F Summit when operating at sea level. The dealer doesnt know and a call to Ski-Doo Tec center wouldn't tell me, said I had to get info from my dealer. Am opererating the Summit at sea level and partially bought it because of the Electronic RER reverse, NICE when it works. Is there any Ski-Doo service people out there? Thanks in advance.