The original corkscrew is in Idaho (Silverwood), and though I can't say enough about how great their woodies are, (One is like a small ST w/ a helix, the other is a twister with great head chopper tunnels), the corkscrew is easily the roughest coaster I've ever ridden, and I've been on Herc at Dorney... It really is that bad.
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I'm 2 for 2 so far!!!