I have an 2001, 2520 sport cabin . I've finished my 11th season and for the past 2 years I've had problems with metal corrosion iside the cabin . The iside of the door lock is really bad and the out side looks like new. The stainless nuts that hold the hand rails and the window latches all are corroaded . The alum ped for the seat also is. The terminals and elec connection behind the helm are still perfect . They are in the closed compartment . If I leave coins on he ' dash' in a week the will show corrosion . Any help out there would be appreciated , thanks................karl