RE: JAS-39 Gripen Owners/Build Thread
I picked up an older JL Gripen and the guy I bought it from suggested I modify the canard control horn to better grip the aluminum tubes from each canard.
I drilled and tapped a 4-40 thread to further help keep the canards from shifting.
I filed a flat spot on each canard tube for the 4-40 screw to seat tightly.