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Don't know why I sort of assumed the Angels might be your #2 team. :- )
Adding to that a bit ... Lackey's 25% curves and 15% sliders (and some straight changeups into the bargain) were actually what reminded me of Karns. Who is a rare curveball-first guy. Not quite as many though.
Watch for Karns' changeup. It's fairly legit and he's going to it. He doesn't change speeds quite to the same degree, agreed. Pretty unusual dollop of it though. Not at all afraid to 'pitch backwards' in Mussina style.