Tony,

do you have much or any lead at your mast tip to achieve tip weight? If you do (and its possible to remove it) go for a sail without it and see if it makes much of a difference to the mast response. You may find the weight is providing a lot of inertia at the tip and effecting the mast's dynamic response. If there is a noticeable improvement put the weight at the hounds (plus a bit extra to get the correct "tip weight").