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gaps
Reading while waiting for the bus in the sun today, I noticed a gap along the right and the bottom raised edges which I hadn't noticed before. I don't know whether it is recent, or whether it was there since day one (September 8) and it took debris (crumbs? pollen?) for me to see it.
Back home with a ruler, I estimate it at 1/2 mm width. It is more annoying at the bottom, with whitish matter. The reddish at the side I managed to eliminate with a fingernail.
Is it common? Is there a risk it will increase? Can it affect waterproofing?
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