Again.. I don't know about that. If you plan ahead and do the hinge and surface right the first time, when you get ready to set the hinge with CA, you should already be there.
I have built quite a few lately with CA. One comment I got from the 'club pro', who has been building for over 35 years now, was that he was very impressed with my aileron, rudder, and elevator hinging on my Seagul Super Star 120. The gap was almost non-existent and the flexibility was there with complete movement available on all three surfaces. There will always be a gap present no matter what hinge you use, realizing the need for gap fillers, or covering that will eliminate the gap for better performance.
A lot of this is completely dependent on the initial setup and the proper slotting of the hinge line on the movable and fixed surface. Centering is really what it is all about, and having the centers really on center is very important. Of course, that goes for all sorts of hinging jobs, be it pinned, CA or whatever else you may want to do.
The nice thing about CA hinges is that you don't have to worry about geting epoxy in the hinge itself.. I know.. preventative measures are required, but it doesn't happen with CA hinges.
It again becomes a ford - chevy discussion. There are many people for CA hinges and many against as well as as many arguements for and against them. I prefer them, and will use them, and I ain't a spring chicken either...
CGr.