That's a good way to drag someone to the fill and have them be very unhappy with you. No two machines are ever perfectly matched, especially when you are mix and matching series (G push pulling with E for example). That and the rear guy usually gets a larger load (front guys job is to make sure he gets a load quick to ensure the back guy still has enough cut left, plus the added weight aids in traction when he's pull
Discuss this in the forum topic Alright scraper hands which way were you taught?.