According to the Race Tech website spring calculator, I need .500 kg/mm fork springs. Race Tech shows .48 as being their heaviest available and Factory Connection shows .49 to be the heaviest that they make. Stock on a 04 wr450 is supposed to be a .46. I already have a pair of .48 springs. What is my best option...short of losing weight? Put in the .48's? Spring (pun) for the .49's? Or can I get .50's from another manufacturer?