There is a clumsy and clunky way to do it in Python. For the selected body part, run up a TK panel with sliders for each parameter, then TK can handle mouse-wheel action for its own sliders. The one halfway nice thing about this method: the parms represented on the panel could be a small set, just the ones you're likely to need.... such as only the tran and rot parms, or only the non-blank morphs.

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