Is it possible to make a scratch in the negative film with an antistatic brush? I do not understand the reason, but some scratches have appeared in my negatives that were not there before. I have been working with an Adorama Camel Hair Cleaning since four years ago, and this problem have not occurred me before. The brush looks like new and the film is Tmax 400, 120 medium format. Do you know another cause? Thank you, Henry.