After bombing around at the hcbd hoverin trying my best to break the eagle 4.
I discovered the following.
Plenum pressure to is 80 thingies and the skirt pressure is 60 thingies.
Exhaust is too loud.
Lift engine needs an electric pump.
Blades need a tweak to get the max revs down from 9500 to 8000
Lift duct need cutting so the bottom edge is at the same level as the blades
Trailer needs work.
So all in all a fantastic result.