Actually... if the hinge woulda been too stiff 15 years ago... its too stiff today too. Stiff hinges load the servo and drain the RX battery... sometimes suprizingly fast.

If you used anything except thin CA on the cA hinges... you gotta cut them and re-hinge, medium and thick leave stuff in the hinge-line, and WILL cause stiff hinges that will fail prematurely. Its not pretty to see what happens when the aileron is hanging by the torque rod on one wing. (or dangling by the clevice...)

If the CA hinge isn't essentially free after 5 full deflections each way... something is wrong and needs to be fixed. The weight of the control surface (with no pushrod attached) should easilly move the hinges.