I've been having a weird issue where if I put the bike in the lowest gear (highest cog in the rear) the chain has a hard time staying on the big ring in the front. There is no front derailleur rub either. I can replicate it on the stand by holding the rear brake and pushing on the pedals. If I push hard enough I can actually make the crank slip. It's a KMC X10SL chain, XX crank, XO cassette. Are the KMC chains directional? Do I have it on backwards? It's not an old chain, but the frame is new. I pulled all my components off my old bike and put them on here. It's a Niner Air 9 RDO.
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Thread: Chain drop only in low gear