Hi Gus,

Since the 6EXA is only a beginner's type computer, it does not have the functionability for what you are wanting.

If you are wanting to fly IMAC, I would recommend the 9C, it will have the mixing capabilities that you are wanting and will need for competition.

If you feel that the cost of doing this is too much, then the only alternative would be as you suggested, using a y-harness and a synchronizer for the trim adjustability on your elevator. When using a synchronizer you will be able to achieve full and equal travel of both servos.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician