I got myself a 1999 YZ400F its had the suspension reworked by suspension tech. the problem is that I weight about 260 lbs and the rear suspension feels really soft. the guy that i bought the bike from was about 180-200 lbs so i am not sure if the suspension was custom to his body weight. my questions.... is there a way to adjust the rear suspension based on the fact that I am heavier than more riders? would it be easier to replace the rear spring with a spring that is rated for a rider that is over 250 lbs? thanks for all the help!!!! Patrick M.