Recording audio in ableton issues

Hi Guys

This may be a proper noob question as i’m just getting stuck into my s2400 but for some reason ableton will not record the order from certain channels and I can’t figure out why.

For example kick + 2 high hats channels 1-3 record fine but then I add a perc on channel 4 and nothing comes through at all. I have all inputs/outputs plugged in so for my mind there should be no difference between any of them.

My interface receives the signal from the sampler and it sounds fine through the speakers but ableton will not pick up certain channels. Any suggestions on how to fix this issue?

Thanks a lot