Erroneous KinArm Behavior

Hi, During KinArm camp I develop a spring-damper model that behaves and feels as expected. However I recently developed a new custom task with visual feedback targets added to the display and the model now thrashes violently unless the damping coefficient is set very low in the task protocol. I made no changes to the hand forces calculation block. To whom can I send my code to try to identify the problem and/or propose a solution? Thanks Rauf