Try different paces and, in practice, put the blue right next to the spot
(about an inch off-spot) to see, whether the spot itself causes the blue
to roll off inconsistently. That can especially occur with an older cloth with
little "dimples" on the spots.
(about an inch off-spot) to see, whether the spot itself causes the blue
to roll off inconsistently. That can especially occur with an older cloth with
little "dimples" on the spots.
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