I currently have a Truvativ Elita SL crank and Truvativ ISIS GigaPipe SL Bottom Bracket (68/108) and would like to swap in an Ultegra 6500 crank and Ultegra 6500 Bottom Bracket. I see the Ultegra 6500 BB listed in 68/109.5. Bike is an 05 Cannondale R700. Will this size work, any issues I am missing, will this swap work anyway? Opinions?