There appear to be two types of "soft" top material I have seen on convertables. One is a vinyl type material and the other a woven dyed canvas type material. I know that convertables are a small portion of all cars made so there may not be a lot of experience here on the board but......does anyone have any recommendations for cleaning the woven type of material? I usually just vaccuum the dust off out of fear that a chemical soap might cause the fabric to deteriorate quicker. Any advise as to what "washing" product is the best or will regular "Car Wash Detergent" be ok?...Thanks...Michael P.