I am getting really low volume on my bass sounds on the M:S. I decided to look back at the presets.
It seems to get back your bass you will need to drive the distortion pretty hard. This will counteract the hard exponential decay. (update: decay curve is post vol+dist)
Not entirely sure why the decay is exponential. It sucks the decays I made for my samples right out. Weird choice. For all my own sampler programs I make the decay logarithmic to preserve the original’s sound quality.