Hi , has anyone ever changed out the cylinders and motor for a rag top. My has been down for the winter in my garage and when I went to lift it the motor hummed but the top never moved. It would actually go back into the well when I pushed the switch the wrong way but never up. I have always smelled an oil smell so I guess the cylinders may be leaking. Is this a big job to do, should I replace everything while I am at it? Any suggestion on vendors? Thanks for your help. Kevin