I have been reading much of the info already posted on this forum to answer my question but I am still not 100% sure of the answer. I am riding a 2012 Specialized Enduro with SRAM 2x10 everything and the factory chain tensioning roller. I am looking to replace my SRAM S-1250 2x10 cranks with SHIMANO SLX FC-M665 2x cranks which are supposedly 9 speed. Will I have shifting problems on the front rings using a 9 speed crank set with a 10 speed direct mount front derailleur?