'Iron Out The Rough Spots' was written by Steve Cropper, Booker T. Jones, David Porter and recorded by Don Covay and The Goodtimers in 1966. It was originally released on single, and features on the album 'See-Saw'.
Note that a first unreleased take was made a year before with the same personel but the choir and Booker T. Jones on piano instead of Isaac Hayes,
at Atlantic Studios, NY, June 30, 1965