P&S Negotiation Preparation

Had a conference with my attorney on the P&S. Of course it is completely one sided benefiting the seller. I always wonder about this type of negotiations. Are there some standard dance that the attorneys on both sides go through?Does anyone get away with the first draft? What is the percentage that someone ended up getting caught by wrong language on the P&S?

One funny thing. All the discussion with the attorney has been via phone and email (yes -- email, which is important for me). We have never met.