The glass versions (aftermkt) tends to break in the silicone fold and take more room when folded down ...there are zippers in some repro tops, the origs didnt have them ,but IF you have a zipper (I`ve had in some other cars) its better to unzip before folding top down , helps the plastic to not be folded al the time...
mine does not have a zipper, and I keep mine down most of the time ,but its best to have top up when you dont use the car , it keeps the top stretched and its easier to put up again... but since its usually fairly warm here in Texas , my top streches when I use it...but if not up for awhile sometimes it can be a pain to get the clasps to reach...
