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  1. F

    Chainring twists Like a pretzel. And draws Blood.

    I see your chainring is twisted, try "ALUGEAR", they work great with SHIMANO 12 speed with HYPERGLIDE+, also I think your chain wasn't installed correctly, the writing on the chain should be outside.
  2. F

    Chainring twists Like a pretzel. And draws Blood.

    Your chainring is not compatible with Shimano chains, try any other 12speed chain than Shimano.
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