Pjjjjj, With the great Two Headed Cat we adjusted weekly based on D.O.E national average with the surcharge covering all but $1.20 per gallon based on 9 MPG for S/T. (ex: ($4.85 - $1.20 = $3.65) / 9 = .40 fsc. I got 11 MPG so it was quite profitable. It was set up as a per truck opt in/out I...