I am installing a BB in my K2 Lithium, aka my "money pit bike build project". Anyway, it is a RaceFace srx that came with my new evolve crankset. When I install it without the spacer on the drive side, i get a lot of threads showing outside of the BB shell on the cup for the non-drive side. But, what I am running into, is if I do use the spacer on the drive side, i appear to be having issues with my chainline, and cant keep the chain on the middle chainring when I am on the big cog in the back. Since these bikes new are spec'd with the evolve crankset, and this is the same BB that comes spec'd with it, I assume it is the right set up. What am I missing?