Kelly, I’m not sure exactly the question but I’ll toss some thoughts to you. You say it is not duration or resource driven but then you reference specific durations. I’m thinking you need to make sure that the durations in MS Project match the durations you would calculate manually. It would be nice to know more about what is off in your scenarios. Anyway, I can provide some things to help (these are more what, not how) * Predecessors will keep each of the three tasks in line (to total 70 days) * Modify the project calendar to include holidays (which will remove those days from the duration calculation). * You didn’t talk much about how you are tracking but using fixed duration will help keep those tasks at the designated duration. There is a lot more to this one but I’m not getting into how. Hope that helps. Let me know if you have additional questions.