You might want to check the temperature of you chemicals. If it's too warm, the emulsion will get softer and more susceptible to scratches. When I use print tongs, I insert the tong under the print, then squeeze it and gently lift it out of the tray. Your chemicals has to be deep enough. About and 1 1/2" or deeper.
I'm not sure if we need that deep of chemicals. Well, it depends on the size of the tray and the print. I have a medium size tray and the chemicals are about 1/2" to 3/4" deep. As I mentioned before, my chemicals are about 60F, on the cold side.
