I agree with Stephen. A servo reverser is just one more thing to go wrong and it will not allow you to trim the elevators seperately. I use the gear channel as he recommends on all of my planes with split elevators. Between the ATV and subtrim you can dial them right in. I've had a servo reverser fail on me several years back and lost a 26% Cap 231Ex.

I've also got a 2700maH NiMH mounted about 8" behind the trailing edge of the wing to balance. I just ran a couple of plywood rails with velco on them back to one of the bulkheads. Then I put velco on the flight pack and a velcro wrap to hold everything together. The rails allow me to fine tune the balance with the flight pack and velcro rails make adjustments relatively easy accept that you have to use 12" hemostats to work on it.

I finally got everything dialed in on my ST and then pancaked it today when it failed to pull out of a flat spin. Not much damage though. The gear broke out and an SFG crushed a rib. It's decent was so slow that the impact was minimal. A couple of hours and she'll be back in the air.

One odd thing that I'm not sure how to correct is that it falls hard to the left when hovering even though it's latterally balanced. I don't think that I've ever had to work the rudder as hard on any other plane to maintain a hover/torque roll. Elevator corrections are minimal. The CG seems to be right on and she'll even tailslide 20-30 feet without correction. Maybe I'm just not used to the vertical presentation yet and not truly vertical. Any thoughts? Has anyone adjusted the side thrust?