I have an '05 YZ250 (2 stroke) and I weigh 213 lbs. I put a 5.2 rear spring on it as per Race Techs spring calculator and when I set my race sag to 95mm I only have about 6mm of free sag. First of all do I really need to go to a stiffer spring to get the free sag better? Also, how do I know what Spring to buy next in order to get it in the proper range? Would 5.4 be sufficient or do I need to go stiffer? IF the calculator said go to 5.2 and that didn't work it's only a guess to know where to go next. At $109.00 a pop, you would think that the spring rate calculator would be a little better. Anyway, I don't want to guess at it so if ant body could help I should would appreciate it.