exactly... I had a tough time figuring out exactly what the original poster was asking... if I may try to clarify:
when the elevator trailing edges are properly aligned and at neutral,
the elevator COUNTERBALANCES (the elevator's leading edge is where the hinges are ) are NOT BOTH at neutral.

(obviously if you were to align the counterbalances, then the elevator trailing edges would no longer be at neutral {one would be higher / lower as seen in the first picture})

1) one elevator is warped.
2) both elevators are warped.
3) the airplane was designed to have a LH and a RH elevator and this kit was built with two LH or two RH elevators.

I'm more than a little picky about having the exact same geometry for both elevator halves, (it's critical for aerobatics, not so much for sport / scale flying)

if it were my airplane, I'd fly it as is for the event, but as soon as I had a day of down time I'd cut the elevators off the airframe, fix them and re-hinge.
at minimum I'd do as had been mentioned: use a heat gun and get them to match as closely as possible

hope that helps!