I have a 2012 SID fork. The Hydrolic Tektro Auriga Comp brakes will not fit as the rotor is a 180. Do you put "spacers" in there for clearance? The new fork has two posts and I'm unclear how to do it right. Or do I buy a little rotor? My old factry fork mounted from the side. That hardware I have. I will clearly need some hardware to do this job but what?