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As @danb pointed out, no cross compatibility between BB30 and BB86. I didn't think our TCX were BB86 though?
Currently cranks are 172.5 which are too long, and also the N/W rings for Shimano cranks look ugly imo.
1.) Why not just chuck a narrow wide on your current cranks?
2.) didn't know you could use BB30 cranks with BB86?