I have a Cat D6K coming tomorrow on lease for one week. I will be backfilling a small farm pond, clearing some wooded hillsides and grade work. Would appreciate some observations and information on the operation and use of this machine? I have a Cat D3G LGP which from reading Cat's brochure on the Cat D6K seems very similiar. They are both hydrostatic with joystick controls. There is a combined decel/brake pedal, I would especially like to know more about that as my D3G has a separate brake and decel pedal. Thanks.