PM Project Manager or Painin Myass

Just a quick post here. I'm currently working on a project that has had many complications during it's lifecycle, which I attribute to not having specs nailed down. That's fine, as it is somewhat normal in the consulting area, but what is a concern is that the deadline is quickly approaching and the thing is still incomplete and very VERY buggy. I am the only programmer on this project, but I have a Project Manager and some "helpers" which my PM and boss thought would help the process (insert "too many cooks..." Quote here) if they were added near the end of the project. Now, the main reason why I'm adding this entry is that I'm currently working 10hr days to try to get this done (this really isn't done at my workplace 8 hrs max, some people work 6 daily), and my PM can be traced back to some of the problems that I'm having (not asking the client to nail the specs down), and what is his main concern this morning. "I've set the clock on my PC 3 times between yesterday and today and it always goes ahead 3-4 minutes. Do you know how to fix that?". If this is really his primary concern, I very well might be looking for a new job come April as my project will not make the deadline.