RE: Are these servos enough
Per instruction manual yes but many people believe that the Funtana needs to have much more than that. As for my Funtana it has about that with FMA direct metal gear digitals. I believe it is more important to have no slop linkages and good holding power on the servos. as long as you don't plan on ripping your Funtana through the sky at WOT then I wouldn't worry about it to much. Plus my Funtana is way over powered carrying 3.5 horse and I have not had a problem with flutter yet just watch your speed the Funtana does not need to be going fast to perform any aerobatic maneuver. The only thing I can say is that it could use just a little more on the rudder.
Photo taken by Greg Cardillo at the NEAT Fair 2005.