I have run into what is perhaps an age old problem and would like suggestions. I have worn out my rope clutch and purchased a new one to replace it. The old one it seems does not want to leave. I began to remove the screws holding the clutch to my cabin top and all of them turn freely and will no longer unthread to allow removal. I am looking for a solution other than removing cabin headliner et al.. Is that possible? I own a 1989 Cal 33-2.