I am looking for any tricks to assure that both elevators in an anhedral stab setup travel equally. In a flat stab setup I use 1/8 inch carbon fiber rods about 15" long atttached to each elevator half and meeting behind the rudder. I have found this to be much more accurate than measuring from the table top or using clip on throw meters. With the anhedral stab the rods come together and cross with down elevator and seperate with up elevator making an exact comparison difficult. Any suggestions that would work as well?

Thanks,
Stuart