Hey, im new to the owners club. I have a 2.5 si sport z4 and my soft top seems to have a few lighter faded lines on it which look a bit like crease marks.. can anyone sugest a product to use on it to get it back to black? ive tried the auto glym fabric kit on it once but the marks are still quite visable. Ill try and upload some photos of it once ive worked out how to do it!!. thanks