Not sure what a Super Fli is but I am thinking you are talking about a variation on one of the old Kraft Quick Fli's or Flea Fli but not really important anyway since you are talking about a single servo installation.

By all means go ahead and change out the servo if you suspect that is at all. Thats also a common mistake by fellows in the past and while they may have owned many airplanes most of us had very few servos and mostly we all tended to stick with the for basics that came with our systems. There was indeed a strong resistance to change out or add a servo likely because of cost in the dim past.


Things are different now with the cost of an aircrafts servo suit being a relitively smaller percentage of the total cost for each airplane than in the past and this even applies to a lot of quality or higher performance servos. So the tendency these days is to not only use dual aileron servos but most of use own hundreds of servos beyond what is permanent in each airplane and there are always choices.


Changing out the servo is or may be the easyest step now and thats fine but of course you will run into the old buggaboo of a single servo wing if you have bellcranks and pushrods which the Phil Krafts Quick Flis did use and that is the royal pain it was to simply remove or reinstall a servo with those double ended pushrods and ball joints etc.

I have not found any old type with a single servo that was a problem to convert to dual servos regardless as to how far out in the wing the servo is so not sure what you mean there, but its all good

John