Actually Jim I believe JollyPopper is quite right and Hitec servos are indeed by factory default the opposite of Futaba default rotation.

I have two airplanes that I did use this method on dedicated flaps (not flaperons). Would I use this servo brand mixing on duel elevator servos? no of course not but with true flaps it works fine.

The problem using a duel elevator mix in the transmitter is if it actually is avalible in the OP's system? There are an awful lot of modern systems out there and especially the direct china stuff that does not. Of course if available it would be the best solution.

Another solution not mentioned yet is to simply use one elevator servo? Hmm what a concept, there are many way to tie two elevator haves together and has been done since the beginning of RC aircraft modeling. The only mix that would be unavalible is what is sometimes called Ailevators or tailerons and for most mere mortals those mixs are pointless. The modern push that every airplane for everyone must be a 3d masterpiece is, well is silly. This is after all the Beginners Forum.

The original method first mentioned in this thread by BobFE in the case of two servos on either side of the fuselage. Yes having the output arms one on top and the other on the bottom does work. I have serveral set up this way, One being my Wild Stick 120 (Moki 180) it works great and the separate elevator haves work evenly and together? now before I get yelled at let me explain and I only have a simple Y cord on the two servos.

They work evenly and together because I choose exactly where to mount the servos and not some Chinese dude that goes by the name Ackerman. It works simply because the pushrods are horizontal and parallel to the each other on both sides with one servo simply mounted higher up on one side. It really does work perfectly well but requires planning and most folks putting an arf together are not going go to the trouble and Arf manufacturers don,t care either and do not put the servos in the right place for this to work.

John