De Vampire edf 4s 2200mah by hobbyking ,balanced fan, stock set up ,7mm carbon tube to reinforce both tail booms ,outlet reduced to 85% FSA ,outlet raised (2-3 mm) to give up thrust, retracts are good, added pilot bit of weathering 15oz wing loading so floats like a glider on landing , C of G moved forward for stability 10mm .This plane is now easy to fly and I would recommend you go get one.
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