They stuffed an extra hydraulic pump in the CF6 for some reason. The thrust reverser are now pneumatic, pneumatic is automated (no more going into the boiler room to open/close valves) and overly complicated. Electrical system is much improved. The engines are awesome and because they are digital, no more fine tuning the setting going down the runway. No more issues with climb gradients or leveling off in the teens. Even at 840, which is the new normal max.
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