can you get your finger nail under the thing? not the bit immediatly circled (join line) but the radial line to the left of the circle?
could be that was the manufacturers join and then with wear its torn vertically and is coming away.
@BrickMan started
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can you get your finger nail under the thing? not the bit immediatly circled (join line) but the radial line to the left of the circle?
could be that was the manufacturers join and then with wear its torn vertically and is coming away.