In the hopes of staving off more escalation, I just want to chime in to say that Jim is one of the premier bike fitters in the world and is also an extremely nice guy. If his post came off as frustrated, I can assure you that he's frustrated with misinformation and perhaps the industry, but not you personally. Also, the standard rules for online interactions apply, namely that tone is often misconstrued.

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Coach at TriForce Triathlon Team: https://www.triforceteam.com