This is what I did to notice the 'problem' (I say that loosely as the plane seems to fly fine).

Setup throws to 45°± while TX is set at 100% travel. Then setup low rates to a normal amount, for me it was something like 20% of the full 3D rates. Now while moving the stick VERY SLOWLY you can see the elevator move up in small incriments. Think of it as a Rolex vs. a fake. The rolex ticks 5 times for every second whereas the fake probably ticks once per second. This is the best analogy I can think of. Anyhow, with the large elevator of the Cap I can see at the tip each step, not a constant motion. Sure if I yank it I can not see the steps but if you go slowly you'll see it. If you have a 'small' elevator you may not notice it since I can not notice it on my ailerons which are only 1-1/2" or so, but on the elevator which is 8" or so from hinge-line to tip it is noticable.

As far as the digitals, I have the 5645 digital on the rudder which is perhaps 12" from hinge-line to tip and it is much smoother. I guess I need to spend more $$$ to get it any more percise.