lean/standard/rich needles in Mo$$

[Justin Cook <justincook@yahoo.com>]

Listers,

Does anyone have any recommendations/experience with
the SU needles listed as standard/rich?  What are the
differences (beyond the obvious) -- I assume the rich
needle does something that can't be done by running
the standard needle adjusted a flat or two on the rich
side.  What modifications would warrant a "rich"
needle?

Thanks,
JC