I think most people are installing the CA hinges incorrectly and that's why they are having problems. The slot in the hinge material is NOT supposed to align with the gap between the fixed and mobile portion of the surface, but is supposed to run at 90 degrees to the hingeline. The slot is there to allow the CA to wick into the material and out to the balsa.
btw, white glue won't wick into the slot like the CA glue will.