I have a Cannondale System 6 with SRAM Rival Groupset. I'm thinking of changing the Chainset for an FSA K-Force MegaExo chainset (English thread). I assume that the bottom bracket has an Si to BB adaptor fitted. If I go ahead with the replacement does the Adaptor stay in place - I know Cannondale does not recommend its removal though it is possible with the right tools.