Group Evaluation Advice Please Help

A couple posts ago I mentioned a group of all guys I got put in. We recently presented and now have to rate each other’s contribution to the project. I did most of the work I designed the presentation and did more than half of the slides. We did not meet until the night before the presentation because our group leader did not communicate with us. They even asked me if I had finished the rest of it when we met which was insane. No one communicated even though I tried to reach out and now we have to grade each other. They ended up doing their slides in the end but we didn’t even get to practice because we didn’t have time and they messed up while presenting. I don’t want to be a snitch and give them terrible grades but everyone has been telling me I need to be honest. What do you guys think I should do? Thanks in advance!