Odd one this but, the occasional print is really slippy, feeling as if it is covered in oil, when pulled from the washer unit. Paper used is Ilford Multigrade warmtone devd in Ilford warmtone dev, fixed in Ilford rapid fixer & washed in filtered water. Other prints from the same neg, printed devd & washed at the same time do not have this feel. It seems to be random. The prints are difficult to hold by hand and cannot be gripped at all by clothes pegs my normal drying method. Any ideas from the printers here?