I have had only one hinge fail and that was a CA hinge and it failed because I was not aware, at the time, that 'two coats' of CA would actually cause the hinge to fail. One application on each side is all that is necessary and desirable. If you go back and try to re-glue the hinge with CA, it will probably fail.

Now with your case, I am assuming it's a CA hinge. If it just broke or tore.. well, that's strange and could be attributed to bad hinges or the wrong hinges (to thin perhaps) for the application.

Did you assemble this airplane? ARF or KIT or RTF? If RTF, then it was glued by the factory and should not have failed that soon or at all. If ARF, and you put it together, well, it's uncertain as to how it failed. Did it tear? Did it have a cut in it that just spread across and tore? Did your landing in the grass stress the elevator? (although you did say you were having problems with it during flight). Maybe it had some hanger rash of some sort that damaged the center hinges somehow?

This just does not sound normal.

If you used CA hinges, then you probably will have to remove the control surface and re-hinge.. but in a different spot AND with only one application of CA on each side.. four or five drops on each side will wick enough to be very secure. And, of course, use CA hinge material.

Oh, one more thing.. you may want to give a yank on each of every control surface to check the integrity of the hinges... just to make sure the problem isn't everywhere.

DS.