I just installed a SRAM Red PF30 BB on my new Vamoots RSL. Since the sheel is 68mm, I am using the metal spacers. I also have one plastic spacer on the non-drive side. When I tighten the bolt to the torque spec, I can barely turn my crankset. Do I need more plastic spacers? Has anyone else installed this same BB and can share what I might be missing here? Thanks all!