[MANNAXMAN]

Originally Posted by ember1205

I was wondering if maybe it was getting wet as you were putting it down... Since it's only on one side, the idea was that maybe it was rubbing against something that was wet or possibly getting dripped on once folded. When folded, most of those areas sort of line up or overlap with each other.

Not likely. I typically pull the car out of the garage before dropping the top. There are no trees or anything over my driveway that might be dripping. Unless there is a liquid source somewhere in my trunk, the top is not getting wet while being put down or while it's down. I thoroughly dry my car after washing it, so it's not likely that the top is getting wet while putting it down. And, again, it wouldn't be in the down position for a long period of time even if it were wet.

Originally Posted by ember1205

I don't think it's from something like a grease or oil because that would seemingly also attract dirt. If the white vinegar seems to be helping (try lightly spraying it on in an area and letting it air dry then brushing that area), then it may very well be a mold/mildew type of stain.

I'll give this a try.