Hi. Because I had the horsehair of the bow already nicely covered with rosin and a bit of dust, I washed them in soapy water. I let them dry for about 5-6 hours. But now they can't be rosin at all ... I roughened the rosin because it shone like a mirror, but it's still almost impossible. Is it possible that the horsehair did not dry out properly, or did I screw something up here and I have a noose ?? I will be happy for any tips on how to rosin then. Thank you very much :)