Actually, he went over that on the first class. He said 308 works but he prefers 309L as well. He recomended a back purge for SS tubing.
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“When you have 130 hp connected to your right wrist, an erect riding position that gives you perfect field of view and the mother of all stoppers you don't even ask yourself "why not" and end up riding like a total twat most--if not all--of the time.”
-Yossef Schvetz
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