I agree with Jeff, in that the NS2 is very rolly, the last one I owned had a 4" pin above RF in box condition, but still rolled very well and could handle medium-heavy to heavy with some light scuffing.
As for the Yeah Baby, drilled pin next to RF. It is much more snappier than the above mention NS2 and is best suited for medium to medium-heavy, but doesn't handle as much oil as the NS2.
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Pat Patterson