Wahoo KICKR CORE Zwift One "Clacking" Sound

Just bought a Wahoo KICKR CORE Zwift One. Install was easy, updated firmware, indexed rear derailleur for quiet smooth operation. Only one issue was making me crazy–an occasional “clacking” noise which did not affect the smooth cycling. Upon reinspection of the Zwift cog, I noticed the outer and inner plastic bumpers were very loose! The lock ring was barely tightened. It was an easy fix to use a cassette lock ring tool to tighten the lock ring but not everyone keeps these tools in their kit (I’m a wannabee bike mechanic). Caution: per Wahoo, holding the pulley wheel, only tighten a quarter turn after finger tight. Result–no more plastic clacking noise.

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