Reply to Numark Total Control

Hi I am using a Numark total control with Traktor scratch pro. The problem is that I can only scratch when the track is stopped. If it is not stopped the track only speeds up or slows down the BPMS when I touch it. (any idea of how to fix this). Also I used to work with Cue before I decided to upgrade and found that there was always a pause after I tried scratching with the jog wheels. Is there anyway at all to fix this or is it just because the Numark total Control just is not that good. Thanks DJZ