The kick is there. It’s kinda buried under the bass since it’s on the 1 and 3, but it’s there. you could try a different kit with bass and drums, but it has to be 0-31 or 2-28 kit, meaning the bass is in those ranges, rather than 63-91. And, there has to be a kick at B0 and at C1.
I played with it and re-edited the OPB to use the NP Brushes Upright 0-31 kit.
Try this file with that kit. and let me know what you hear.
That’ll_Be_OPB.sng (8.1 KB)
I moved the kick drum C1 in this, and it’s much more present. But, there is a kick at B0 in the Bose kit, so I think with that one, it’s just that the kick doubles the bass, and you lose it in the mix. Always try to use the recommended kit for a song, or a kit that has been listed as a substitute for the recommended kit.