Tom we run a 30 ft header on the R60 and and have little problem with it feeding,sometimes though the rotor has a bit of a rumble in sappy beans.HP is no problem as the motor was dynoed at 260 hp,i've got a feeling somebody played with the fuel pump not that we are complaining. The R72 is better in green beans as the rotor gets rid of material a lot smoother.Our conditions are probably different to yours though but both combines were to-gether in beans this year that was sprayed out to ripen (didn't work) so the beans knee high stayed green and the combines smelt like they were harvesting silage but the R60 handled it no problems at about a mile per hour slower than the 72. john