good luck with getting help on this topic.i been having the same problems for weeks and got no feedback or help at all .i posted the same topic.we might have to call numark cause no one from serato has responded. good luck

Try cleaning your crossfader.

i cleaned and replaced my crossfader,no luck

Hmmmm, is it bleeding when the contour is set to sharp or all the time?

all the time.its working a little better.its doesnt bleed when i have it all the way to one side but if i move the crossfader over just a little then i can hear the song on the other deck bleeding through.

So the sound from the other deck is coming through more than it should is what you're saying?

yeo, thats what im saying

Hey DJ Res-q,

So you have changed the Curve on your NS6 and in the SETUP screen in ITCH?

If you want to recalibrate you can follow these instructions for full calibration.
If you load new firmware to the NS6, or if you ever experience problems with your knobs or faders (a very rare occurrence), the NS6 can be recalibrated. Follow these instructions to calibrate the unit.
1. While holding the right Deck's SYNC button, turn the NS6's power on. HOT CUE BUTTONS 1-5 will flash.
2. Set both PITCH FADERS to the maximum position (closest to you).
3. Press the left Deck's SYNC button.
4. Set both PITCH FADERS to the minimum position (farthest from you).
5. Press the left Deck's SYNC button.
6. Set both PITCH FADERS to the center position.
7. Press the left Deck's SYNC button.
8. On the left Deck's STRIP SEARCH sensor:
a. Touch and hold the right-most position (where you would ordinarily touch to jump to the end of a track). Press the left Deck's SYNC button.
b. Touch and hold the left-most position (where you would ordinarily touch to jump to the start of a track). Press the left Deck's SYNC button.
Note: Make sure the whole pad of your fingertip – not just part of it – is touching the end of the STRIP SEARCH sensor.
9. Repeat Steps 8a-b with the right Deck's STRIP SEARCH sensor.
10. Calibration is complete! You may start using NS6.


Let me know how you go.

Regards
Dave W