Im thinking of using the raceface PF30 83mm BB adapter on my 2013 Demo over the plastic SRAM cups but would like your pro opinion on whether or not its the right way to go. Ive got Shimano SAINT m810 cranks and want to use them on my Demo build. If any of you have installed the Raceface PF30 bb on a demo with saint stuff please chime in and let me know if its a seamless install. I just bought it last night and noticed they only supply you with two 2.5mm spacers. PLEASE HELP.