ORIGINAL: MinnFlyer

Dick, unless you're flying very presision stuff, I wouldn't worry about it. In fact, the Pacific Aeromodels Gee Bee "Y" Racer uses this method - this is a 180 4-stroke size airplane which you can see a review of [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=132]HERE[/link].

Now on The Gee Bee Y, they DID have one servo higher than the other, and that's a big help, but if you look at the image below you'll see that even with some pretty radical throws, there's not a LOT of difference.

To describe what the image points out:

A) The distance from one side to the control horn is shorter on top than on bottom.

B) The bottom pushrod has been made longer to compensate.

C & D) As you can see, the top pushes a little more in one direction and pulls a little less in the other than the bottom - If the two servos were aligned so thatone was higher or lower than the other, this difference would be even less.

Bottom line, If it were me, I'd stagger the heights of the servos and I wouldn't lose any sleep over it.