Hi fellas, i am the owner of a 2001 wr250f and I have been trying to get my dad to ride bikes for years and he FINALLY got one. He bought a 1999 wr400f. But my dad is a big guy, he is 6'4 and about 290. The race tech website told him that he needed .51 spring rate in the front and 5.6 in the rear. This rates are high and i was wondering if anyone even makes a spring for the forks that is .51 in the front. Any suggestions or knowledge would help. Thanks for any help.