I just picked up an Iron Horse SGS dh, the one with the boxxer race. after three rides, acording to the zip tie, I am only getting 6" of travel. In the manual it says to see thier website for more info. I cannot find any thing usefull on the site. Can someone here give/find me some decent directions to convert it over to 7". I am a capable bicycle mechanic and should be able to git-r-dun. I want to avoid sending the fork in to get more travel. thanks