I replaced at least 24 frames in pickups the last couple years and i could always beat flat rate. Keep suspension and other pieces in as large of sections as possible. Separate as little as possible. Never had one come back with a squeek or a rattle either. Looks like you did a good job Ed. Some insurance companies really drag out paying supplements. If it is a company you don't work with regularly, insist they overnight a check for the supplement before you release the vehicle. More and more body shops are doing this, sometimes we spend way too much time getting supplement payments and they drag on for months. Sometimes the insurance sends the supplement check to the customer and they think it is Christmas and they spend it instead of paying us. Good luck in your body shop venture, it is challenging at times.