Do you mean that you installed the hinges, and now you can move it down further than you can move it up by hand? As long as you can move the elevators by hand without linkage hooked up, at least 1 1/2 times the movement called for in the instructions, you have no trouble.

When doing the control surfaces hinges, make sure the spacing is tight, but not to tight. RCKen has a good tutorial about installing CA hinges. Debonding a hinge is not something to try. If the hinges are installed badly, simply cut them off with an Xacto knife, cut new slots near the old ones and install new hinges. Trying to de-bond the CA will really not work unless you completly soak the wood in CA remover which means you are probably never going to be able to CA to it again, and also any glue joint inside are also going to be damged. Just don't try it. Simply cut the hinge and install the new ones close to where the first were installed. You can't install in the same place for the same reason you can't debond the CA and because the CA and the hinge material becomes rock hard, you can't cut new slots directly over the old ones.

If I have misunderstood your problem, please restate it with some more detail

Don