I have a few of each core type drilled both ways. Some good, some not so good.
I'll start another topic to debate that issue.
As for my Cobalt Solid, I have a short pin (2")...pin under ring, CG out, no weight hole...works great on a THS.
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Jon (in Ohio)
CHROME WON'T GET YOU HOME!
F.O.S. Proud Saw user...see profile.