Thank you @Bloopdad1, that’s helpful. I bought Hidesine deluxe all weather bass rosin. It’s still pretty hard, but I have touched it up a bit with a key as someone suggested. However I can’t see rosin on the bow and it doesn’t seem sticky. It’s okay for a very short while, rosin dust appears on the strings and body of my NXT and then seems to go quiet. Do you think it would help to soften the rosin a bit, can one do that in a microwave ( for a very short time obviously).