I am looking for tips and advice on the preproduction stage of the recording process. My band is currently preparing to enter the studio for our second album and want to be as prepared as possible. At this point we have recorded basic multitrack live versions of each song (not to a click). Kick, Snare, Rack toms, Floor Tom, overhead, Guitar 1, Guitar 2, Bass. We are now in the process of taking the scratch recordings and tempo mapping them to create a tempo map for each song and preparing midi drums to record an initial guitar guide track for the drummer. Our songs have multiple time signature changes along with tempo changes. The process so far has been very time consuming. Any advice on taking the scratch tracks we have recorded and building a good tempo map from them in an efficient manner? I want to have consistent verses, chorus's etc.