I don't think you will screw anything - just be careful when handling the headlight assemblies. When I was putting in my LED's I took my headlight into the house and sat down on the couch with it.
Actually I tried using some pliers too, and it didn't help. And there is more chance to break something using tools I think. So I suggest just keep trying with your fingers :) . If you can't, find someone with long skinny fingers :)
~ Shadowfax ~