ORIGINAL: invertmast
Well rudi has proven that their isnt a balance problem with his latest post, at least in his model with un balanced stabs...
Yes, one reason may be that in Rudi's case, he removed the other factor in flutter that Falcon conveniently ignores, the spring constant of the control linkage.
You can take a surface that does not flutter on its own because of static and dynamic balancing, and cause it to flutter by introducing "springiness" in the control linkage.
Bob