Nux Loop Core Looper hassles................

  • Hi. I know Im in with the big guns here so please excuse me as I havent found the answer to this elsewhere and dont know. No matter how old I am ...... Im still new at this thing...... :/
    I have just bought a NUX LOOPCORE Looper pedal.
    I have connected the looper into the Kemper as I saw on Youtube . The Send of the Kemper I connected to the Input of the Nux Looper Pedal ...................... Return of the Kemper to the output of the Nux Pedal.
    It works very well except that when I play back a loop I created and play over the top ( or overdub for that matter) it cuts out the loop playback sound notes as I play. Almost like if I duplicate the same string note it cuts that string note out . Cancels it out. I have set up Looper Mono Slot in the Stomp section and edited it by turning down the Ducking which seemed to help somewhat but it still seems to cut out notes when I play overt the top of the loop. I hope someone can help cause I just dunno....... Many thanks