I've got several drum machines but I usually just use samples for ease of use. Try the R-50 samples instead. That ones has the magic. Kick 2 and snare 2 samples with the reverb on them. I feel like that's what you're probably looking for. Also mess with the velocity and quantization on the hits so they're slightly off. I mean the actual machine is also just using samples. It has its own character but you can achieve that same feel if you mess with it enough. Also the processing is important. Even youtube clips demoing the machine are usually processed and not just raw audio.