are the 650r fork springs already preloaded to 15mm? I installed race tech springs tonight, and they included no shims/spacers. I talked to race tech on the phone about this today, and they said just bolt em in and go. There are of course the stock washers (top and bottom) that were installed. Does the fork cap pre-load the springs? Or do I need to install some sort of spacer to preload them? Race techs specs said 15mm of preload.