hi, i am working on a DF jet where the wings, stab & rudder have already been glassed

however, the "expert" left some small wawes in the trailing edges
thus i need a correct way to "true" these lines.... sanding one side and filling in the other side seems obvious to me, but how and what to use as a filler is my dilema ( to retain strenth & keep the weight to a minimum) [&o]

also, the rudder fin is slightly curved to one side, i would need to insert a rod (carbon fibre?)
to straighten & strengthen the tail fin

i was thinkink of rigging a temporary (straight) braces on each side, drilling the core and inserting a (?) rod, using epoxy to hold it place
not sure how exactly to do this...

otherwise the surfaces seem to be aligned OK

please help []

thanx in advance, Vasek