I plan on purchasing some fork springs for my offroad/ trails 06 YZ250. The MX tech spring calculator calls for .45kg springs for my weight (210 lbs. with all gear on). My question is that .45kg are hard to find and .46kg are the next size. How much would one size bigger in spring rate affect the suspension ride? Would it be to stiff for offroad/ trails? I ride fast B harescramble level btw.