Norm, on Kitfox Aircraft's website you can click on the "Home" button top left and a drop down menue will give you service letters and service bulletins.
Under service letters look at number 46 for the rudder pedal problem. It does not show a fix in the letter so go into service bulletins and there is a drawing for a Vixen Model 5 reinforcement proceedure at number 38.


The riviting of the gusset worked.
Most welded gussets in place to reinforce the vertical rudder pedal tube and another small gusset to reinforce the tube that the rudder cable attaches to.

This issue also affected earlier models too.
Do a search on our site for rudder pedal reinforcement. The photo below came from a thread from a model 2 issue but is the same fix.

Here is a photo of a pedal assembly that has been reinforced.
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