Tried my first contact prints today with no luck, using Ilford multigrade RC paper and multigrade developer at 1:9. All the prints went totally black except one where i could see a faint image of the 4x5 negative border but not much else. I did use a amber safe light and this is a brand new box of paper(just opened) exposures were 5-10 seconds using a 40 watt light bulb. Any suggestions on what i'm doing wrong?