I usually contact print my 8x10 negs on 8 1/2 x11 or 11x14 paper because I think it looks better. To save money, I've started to print on 8x10 paper. I've noticed that when using the Bergger VC warmtone or the Oriental warmtone papers, that the black border around the print flakes off in the wash. I've never had this happen before and I am confused. I've never had emulsion flake off before and I am wondering why it is happening on two separate papers. It really looks bad. To be precise, I am using Ilford warmtone developer and selenium toning and washing for 30 minutes.