I am going to beef up my suspension (2005 XR650R) with .47kg springs up front and a 12kg spring in the rear (using Bruce Borynack's suspension chart). I don't do "major" jumping or racing, all fast trail/woods (rocky) riding and occasionally following my kids around on an MX track when I can't stand just watching. I know revalving will allow me to better fine tune things, but with these springs, would I HAVE to revalve to get any benefit? I am worried that these springs are too stiff for the stock valving. I don't want to go from way to soft to way to hard. Thanks.