I am having an issue with my 1993 convertible. Ever since I bought the car, the convertible top hasn't worked. When I push/pull the switch, I can hear the motor working, but nothing really happens. It does have a very tiny amount of power, but you have to do most of the work. The top is somewhat new and has new tension cables in it. Any insight as to why this might be doing this would be greatly appreciated. Thanks.