taking out the lead leaves it unflyable, taking out up elevon results in a dive, i can never be accused of flying too slow
i've not checked the fins too closely because they are always being knocked off during combat, if this was an accurately built balsa job i'd be worried, but all these EPP wings are built the same way, the gear is in the same place which means you can fit and fly, the CofG is automaticaly correct.
the only difference with mine is it does have a differnent section compaired to the older Vipers, but that couldnt be enough to do this...
i built it in the cores to insure no warps, tho i do seem to have slight anhedrial.
its been recovered twice and its been the same both times.
at speed things are fine, but a few sharp turns slows it down much quicker than other Vipers turning even sharper and going slower and eventully leads to it stalling compleatly and falling from the sky in a rocking fashon.
maybe i need to pull a bit of tape across the top to give dehideral and cut some fins bigger than kit.