Hum Interrupt

[CavortingOgre]

Hi,

so I was doing some editing on some sound fonts that I have specifically Acluophobia, which I just love. So my problem is that during the hum if a clash/motion occurs it just cuts the hum sound. Unlike when using the default or the other sound font I have. Where the motion sound integrates with the hum.

I was wondering if there is a simple way to achieve this, or if I just need to go through each motion sound and add the hum to it. Any help would be much appreciated.